It is.
Vieira:
World Champion
European Champion
3x English champion
5x Italian champion
1x Champions league
5x FA cup
1x Italian cup
Not counting super cups (1 game comps)
Keane:
7x English champion
1x Champions league
4x FA cup
+ a couple of trophies with Celtic
Viera left Inter before they won the Champions League - Think he played 2 CL games that year so to say he won it is a bit much.
It's also 3 Serie A titles I think as, again, he left Inter before they won it in 2010. Also his first title with Milan he played 2 games all season - so again, generous to say he won it.
So it's 12 Domestic and 2 International for 14 total.
Keane has 14 Domestic (You have to count the two Celtic trophies as he was at the club - and he started the league cup final) and, obviously zero international, so yeah - same trophy haul basically.
EDIT - Also worth saying that one of Viera's FA Cups is one of the greatest robberies in Football history and should be a Roy Keane FA Cup win!!