Well, I did the math and a 400 gr arrow at 290 is 74.71 pounds of KE. A 550 gr arrow flying at 220 is 59.12 pounds of KE. That's not opinion, it's fact.

290x290x400/450,240= 74.71
220x220x550/450,240= 59.12

Now, I am no mathmetician, hell, I may have not even spelled that right, but that's a heavier arrow flying slower and producing LESS kinetic energy.