Just relax. Dolph, Truth, etc., didn't look weak. It's Kane, for Pete's sake. The first time Kane appeared, he did that to Undertaker (who, at the time, nobody had been able to touch in the ring, much less hurt).
If Evan Bourne had come out and done that to four guys, you'd have a point. Kane does it and it's actually a a compliment to those guys. Undertaker can make people famous by giving them a Tombstone Piledriver. Kane does it by giving them a chokeslam.
wk