Vaas? Think you mean Zaheer.Ok....maybe in their top 5 pacemen...easily. Really only Kapil, Vaas and Srinath are better pace bowlers.
And his bowling wouldn't be cannon fodder against an ATG side. Throughout his career he was consistently able to get good batsmen out.
Anyway, look he did get good batsmen out every now and then but really he is not much more than a serviceable fifth bowler. Sure, against most of the current sides he'd probably a very decent first change bowler (as he was for SA) but I really don't want Kallis bowling against say, Hutton+Hobbs+Sobers+Lara(this is assuming he's in the first 11 or I'd add Don-Tendulkar-Richards)or something like that. To say he got good batsmen out is neither here nor there tbh....even Ishant Sharma has got good batsmen out (not saying he's better than Kallis). The question is how effective he'd be in an ATG side. I for one think his bowling against a truly great batting side would be pretty mediocre. If someone truly thinks he's better than the Tendulkars, Pontings and Richards as a batsman then fair enough we can agree to disagree but don't think his bowling should be a clincher....not against an all time side anyway.