Aguero Costa and Kane I've already mentioned. But benteke has less goals, a worse conversion rate and has his stats topped up by at least one penalty (west Brom), Austin has like five penalties out of his 17 goals, he has a worse conversion rate too. And bony hasn't been anywhere near the others in your list...
I like Rooney a lot but Giroud has had an amazing season. My comments are Re performance this season rather than overall ability. I think Giroud is top quality but not world class.
I think most Arsenal fans (even the really thick ones) now accept that Wenger flattered to deceive at the start of his reign, and that he's finally be "found out."
The Specialists got their name and reputation for a reason, CFC. That's all I'm going to say on the subject.