I think again its a positive statement from a former player who has no need to say such positive things other than he values Wenger and what he did for him. If you actually read what he is saying then yes I think we do play better football in general, we dont give it away as much as we did, we play for possesion now much more than we did with the invincibles. The diff being is the invincibles (as Viera says) were more mature and stronger. Mentally they were better but in terms of tactics I think we have an element better than they did. A few better players in 3 positions and we would be well on our way to being a challenger. We have been in that position for ages now so I dont expect miracles but i do expect an improved financial position in a couple of seasons which can spur us on to getting back to where we were.
I think the biggest difference is the amount of confidence the 'Invincibles' had, throughout the team. The Arsenal sides of recent years have ALWAYS had the potential to win big, but the confidence let them down at times, at others, the sheer weight of injuries to the squad was the decisive factor.