It would possibly depend on the points balance. Being unbeaten but scraping to a title with tons of 0-0 draws probably wouldn't be as impressive as winning 37 games and losing one.
Of course, in an actual real life season, other factors would have to be taken into account, like Europe, domestic cup/s, style of play, how many games were won well and how many were won by flukey crosses going in or last minute penalties and such.
I guarantee though that an invincible season would lead to more merchandising options I think, lots of t-shirts for the club execs to get excited about. "Invincible" is a tight marketing label. "Pure tons of points, lad" isn't quite as transactional.