Well, off the top of my head, the A346's engines will do 60,000 lbs. of thrust, but they're derated to 56,000 lbs. for longer life. The smallest engines on a 777 are RRs and the least amount of power per engine on a 777 is like 76,000 lbs.
The A346's engines are about as large as a 767's engines, so that should be a good starting point for comparing the two.