It should be quite a bit brighter.
This is, from left to right, on 'white':
ETC S4 ParNel, 750w
Elation Opti Par Tri
Elation Design LED 36 without frost
Elation Opti 30 RGB
AMDJ P64 LED Pro
You can see the P64 is beating the Opti 30 intensity wise, but the Opti 30 has 25 degree angle vs the 10 degree of the P64. The 10 degree on the Opti 30 Tri would allow it to blow it out of the water since the Opti 30 with less output is holding its own fairly well here.
R21 in the ParNel and me trying to match with LEDs.
R80 in the ParNel with me trying to match again.
R27 in ParNel and same deal.
White again and me trying to match the white of the ParNel. The P64 didn't fair well with this, the blue would 'jump' on at a certain point and turn the 'white' blue. I also used the Hog for this one, so it was exact values I was out putting vs faders.