The lfbowling.com website has a new ball called the Black Pearl Legend.   The RG/Diff numbers are different than the Black Pearl, Black Pearl Blue Ocean and Gold Diamond.   Does anyone have any information on this ball...is it 2 piece (no filler core)?  Is the XRT621 cover stronger than the XRT421 cover?

I have the BP and the BPBO but wanted something a bit stronger and this might just be what I am looking for.