I'd agree with Arsenal comment; that was a pretty exceptional side in terms of talent. Henry, Viera, Bergkamp, Pires - just a remarkable side. City would probably have a more talented squad but hard to beat that team for talent.
The mancs were probably a stronger team - Becks, Giggs, Keane, Scholes, RVN and Schmeichal at the back but for pure talent hard to go past that side Wenger put together.