Greg responds...

At the very end of Team Year Five, i.e. right before the start of Season Two:

TYE LONGSHADOW - 15
VIRGIL HAWKINS - 14
EDUARDO "ED" DORADO, JR. - 13
ASAMI "SAM" KOIZUMI - 13

I have not yet had a reason to calculate their exact birth dates, so I have no idea whether each of them had one during the six months of Season Two or whether one or more of their birthdays came after the end of the season. So, for example, in the episodes you saw, Tye might have been 15 still, or he might have been 16. Or he might have been 15 in his first appearance, but 16 by his next. Or whatever. You get the idea.

As for Spider-Man, I haven't heard what you've heard. Quite the reverse. And certainly, no one at Marvel has said anything to me about it. Nor would I expect them to. My understanding is that Ultimate is doing quite well.