Yep. I did :) On wikipedia is, that all games of Ratchet and Clank in the collection i have (Ratchet and Clank, Ratchet and Clank Going Commando and Ratchet and Clank Up Your Arsenal runs at native 720p 60FPS.
https://en.wikipedia.org/wiki/Ratchet...Collection
But I didnt find any FPs test of the game on PS3 and I'm unable to monitor FPS in my Avermedia recording program (Recentral 2), so I dont know how stable it runs at 60FPS. But this game is not that graphically "demanding" like GoW Ascension, so it shall be ok.
You won't know it 'till you try it.