...
... I can't even start to describe how insanely craptastic those explanations -- your conception of relative skill, job requirements, and relative payment -- are.
Look. Let's use your 'skill level + X' and 'kill this slot for me' examples. Not because they're good examples -- you have a drugged-out ganger chopping down an unarmed guy, a highly-trained shooter blowing away a nearly-nobody for peanuts, and then a specialist to not actually do the job, but instead contract it to the aforementioned shooter, and all these because the Johnson is scrambling to cover his ass, not actually planning a run -- but because they're you're examples.
Alex: Let's just say he's a sniper. Skill Level 6, which is X + 4, X being 2.
Barry: He's our generalist. Shooting people at a 2, social networking at a 2, computer hacking at a 2.
Chuck: This poor sod is our mook. He isn't 'Uneducated', but he's got a skill of 0 - Untrained.
Dave Johnson sits down with the ABCs and says, "I have three people that need to be done away with. Individuals will be paid only for their own personal kills. The first guy is a BTL addict ex-scientist currently living in an alley, worth 50¥ to me. The second guy is a moderately protected BTL dealer who fed him his habit until he wasted away, worth 5,000¥. The third guy is the incredibly-well-protected Yakuza oyabun, living in a highly-restricted zero-ingress zero-egress apartment complex; he's worth 500,000¥. Everything needs to be done by 9:00 PM tomorrow." Team ABC agrees to the job.
Alex, Barry, and Chuck sit down together to figure out who's going to earn what.
"I'll do the addict," sighs Chuck, to which Alex and Barry agree, and Chuck goes off to find Mr. Addict and bury a knife in his skull as he drools in a BTL daydream. He gets paid 50¥, goes home, and drinks some synthahol while watching the game on TV.
Alex and Barry look at each other. "Well, can you get into the place to do the oyabun?" asks Alex. Barry shakes his head; the place is, after all, a zero-zone, nobody in, nobody out. "Do I look Japanese? Not in the time allotted." "I'll take the shot, then," says Alex, "but I need you to find out some details for me. I'll pay you ten percent." 10% of 500,000¥ is 50,000¥, ten times as much as Barry's going to get for whacking the BTL dealer, but since he's got more skills than just pulling a trigger, Alex is willing to pay a piece of his own for Barry's ability to find him the info. "And you help me get the Dealer's guards out of the way," adds Barry; Alex agrees.
For free, to buy some good will, Alex runs interference with the BTL dealer's thugs while Barry puts two in his chest and one in his skull from ten feet away; dead BTL dealer. Barry gets paid 5,000¥.
Barry then turns around and goes to the rumormills for info on the oyabun's personal habits. He works the crowds both in-person, schmoozing people and making nice to the ladies, spreading around a little bit of that 5k¥ he just got. As well, he checks message boards and ShadowSea for fanzine info on the oyabun -- what does he like? What habits does he have? What's the design of the enclave in which he lives? Ten hours later he comes back to Alex and says, "He eats dinner every evening at 7:00 PM, with the window always open eight centimeters. Here's where he sits; here's a map of the enclave and surrounding buildings."
"Ah-ha!" says Alex, working the sight lines. "I can take a shot from the 17th floor of this building, fire between these two buildings, through the 8cm window opening, and put the round into the oyabun's left eye.*" At 7:17 PM the following evening, the Oyabun gets killed just that way. Alex is paid 500,000¥, of which 50,000¥ goes to Barry for his generalist help.
---
Now. That scenario requires everyone to do a job that requires a skill-level of their own -- 0, 2, and 6. To properly squash the 'generalist gets paid more for the same job!!' argument, let's use just the BTL dealer.
Johnson: "I need BTL dealer dead."
Alex: "10,00¥ for a guaranteed kill, no matter his bodyguards. Clean, quiet, one bullet, nobody sees me."
Barry: "5,000¥, I'll have to schmooze my way close to the guy to pop him, but I can get in. Of course, I'll have to shoot my way back out at that point, but I'm pretty sure I can do the job."
Chuck: "50¥ and I'll jump him somewhere. Don't think I'll get him, but I'm cheap."
7 times out of 10, Dave Johnson is going to go with the guaranteed, no-traceback Skill + 4 guy, and happily pay double for a job Very Well Done. The last 3 times he'll go with Barry, but he'll keep Alex on mental speed-dial just in case it goes south and Barry's blood needs to be cleaned off the walls with the job still needing to be done. He doesn't need a schmoozer or a hacker; he needs a shooter, so even if it's just a BTL dealer hit, he's going to pay for guaranteed, excellent work. Otherwise it's almost literally a shot in the dark with the hope that you succeed.
* -- bonus point to the first person who states the fictional assassin who prefers this target.