So, how bad is the Lumia 720's screen?

So I have been on the hunt for a unlocked phone and have narrowed it down to the 920 and the 720. The 920 is pricy but the screen is gorgeous. The 720 on the other hand is much cheaper but the resolution is worrying me. The 720 also only comes with 512 mb of ram so I can't play all the games in the windows phone 8 marketplace making the number of apps available even lower. Would like to hear your feedback and thanks.