What age is Yoda? The 800-900 year old or the 400-500 year old version? If Yoda is around the 500 year mark then he would be a match for Caedus. Age makes a big differance. A younger Yoda would have more stamina, allowing him to fight with his Force powers and saber much longer and much harder. If this is the case then it might wind up being a draw, maybe a narrow victory for Yoda.
No he wouldn't.
Yoda in his prime was prequel era. Confirmed by Leland Chee in his statmeent about fighting against Palpatine.