I don't see how this is any different than the usual Jazz reference like Cliffy pointing at the framed cover art for Jazz 1 in a Studio tour, or Cliffy going "Hey Jazz would be cool for XBLA". Its better than nothing, I guess, but its same level of barely something we've always gotten.

You don't even fight turtles! The simplest thing, and its not even there. Something tells me this was completely unrelated to Jazz and someone went "Well its sort of cartoony, lets just toss him in"