All of these are coming off of disappointing previous movies. Man of Steel, TDKR, and the prequels were all let downs. Both of these still have potential to be massive cluster ****s.
I have to go with BvS but only barely.
I'm excited to see if Ben can handle the cowl and what the future of Batman movies may hold.
Star Wars is too run into the ground and whored out. This movie can redeem that but it won't get much faith from me until it actually does. Plus if they botch it they can potentially damage the legacy of Luke, Han, Leia etc.
I agree with you to an extent, the main factors for me are the following...
1. Hated (really hated) MOS, and Snyder will be directing this one as well.
2. Tired of all these Superhero reboots, I would like to have a little time off between incarnations. That goes for Spiderman as well.
3. While the PT was at best clumsy, and poorly written and at worst (AOTC) absolutely, unredeemingly atrocious, at least it will have been 10 years between films. And the man to blame for those films has been ejected from the Directors chair.
4. The return of a much loved cast.
I have always been a much bigger fan of Star Wars than Superman, and while Batman was a favorite of mine as a child, nothing can beat the nostalgia I feel for seeing the cast of the OT return.
Both these movies have a strong chance of being underwhelming if not absolutely horrible, but with Snyder coming hot off MOS to direct BVS, I feel that movie being terrible is almost a foregone conclusion, even if it might be unfair to judge before seeing it. With J.J. attached, I almost feel like the next Star Wars movie is an unknown element, something that could go either way.