Disagree. With another strong team in the group, chances are good they'll do the business on the pot 3 and 4 sides, leaving them little to play for. Of course, it leaves you with two difficult games, but if you do well against the pot 3 and 4 sides, too, it becomes a two-horse race and two go through anyway. I don't think it really makes much difference in the end; not when two go through.
Ultimately, assuming my team were in pot 1, I'd prefer either the worst pot 2 side or the best to be in the same group. Goes without saying that I'd want to avoid any decent pot 3/4 sides, especially billionaire-backed newbies like Man City that should punch way above their ranking.
dunno not finishing top of your group can have nasty consequences (like meeting Barcelona in the next round) and having a team like real in pot 2 and in your group is going to create the distinct chance you could finish 2nd