Shadow Claw vs Ember?(Typhlosion)

It's just fine for attack, almost identical to Ember except it's a bit faster which makes dodging easier.

I've got one (SC/O), and it's actually pretty fun to use as an Exeggutor specialist. That is probably its primary value.

The main problem on offense is you do not get the type advantage of whatever you'd be wanting to use fire against, with the exception of Exeggutor.

It is a whole lot worse on defense though, so if you are--for whatever reason--wanting a Typhlosion for defense, then save up and try again.

I have one and I prefer the shorter cooldown of SC > ember, even though SC doesn't get STAB. As others have said, yeah it gets the super effective against exeggutor, but in those situations ember is also benefiting from stab

PvP...it may also act as a wildcard against slowbro/king and starmie. But then solar beam would be preferable