Crossflash Philips 1628B to Benq EW164B

As subject said: is crossflash possible? Anyone done it yet?
I read in thread here: http://club.cdfreaks.com/showthread.php?t=152861&page=3&pp=25 that i can get some benefits of it.

I tried this a few days ago, comparing the results of a PP2 x-flashed 1640 to the same model with BEFB/BEMB. I came away with mixed results:

http://club.cdfreaks.com/showthread.php?t=154738

All things being equal, PP2 performs better wrt PI (tho’ who know how accurate this result really is). As bichonn later noted, PP2 doesn’t scan PIF – an important test.

Can anyone with more x-flashing experience comment on this issue?