This was asked a while ago but I figured I would answer it here since I can't find it's original thread.
Q: Does Winnie the Pooh lvl 1 negate the added bonus of Equipment.
A: Yes (proof: text of Fat Bandit "The
attack value
of equipment cards and the support of friend cards does not get added to this card") since the value added to the equipment card counts as in attack value bonus, it gets added in with the value, then taken to 0 by Pooh.