Makes sense. Against Normal-types, Sucker Punch out-performs Shadow Claw.
Furthermore, I cannot think of a matchup where both Shadow Claw and Focus Blast enjoy type advantage: Shadow Claw is SE against Ghost- and Psychic-type, both of which resist Focus Blast. If you start from Focus Blast, then Shadow Claw can do at best neutral damage - Ice-, Steel- and Rock-type. Dark-type, again, resist Shadow Claw.
Ghost- and Fighting-type moves have next-to-none synergy, in conclusion.
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Gengar's move page
It says that SC/FB is C, and SP/FB is X. But in fact, who would use FB for neutral damage? SP/FB is clearly superior because SP is not resisted and FB deals super effective damage against Blissey. Yes, SC/FB has viability, but SP/FB is just more useful.
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Answers
It Depends on a lot of factors but roughly you can think of the benette gengar question:
G-H/SB = 11% lower DPS than G-SC/SB
B-SC/SB = 16% lower DPS than G-SC/SB.
However, you are at better odds of just walking into a lvl 35 +70IV shuppet; benette is alot cheaper and faster to find a decent one at high lvl and no need for any dust.
