look like standard Revo's to me, I think the angle of the pic is an illusion. (that and how short his extensions are)
As far as the left hand drive... there is some science behind it that makes sense on paper... doesn't mean it translates to on track though. Overall, I tend to also think it's neutral (or very, very close, within margin of error certainly) to "normal"
Fwiw -
here is the article I was thinking of with Dean Phillips. Was a TK1 not a T4 he tested it against. He sees some significant gains... (almost unbelievable gains really from a bike change) but the T1 is a fairly old design so you'd expect the new "supertrackmachine" to be a good bit better.