Well, BW is about equal to Rook. On 8x8 at least. But you are right, quick naive counting with Q = RN = 9, BN = 8, KN = RF = NAD = 7, R = BW = 5, B = N = FW = 3 gives totals of 31 for FIDE, 48 for Capablanca and 60 for this. So it has 33% more power on a 20% larger board as Capablanca. Divided by the board width we get 3.875, 4.8 and 5. I guess part of that is due to the fact that it has an extra piece. But Seirawan Chess with 48 on 8x8 is much worse (6). And I did not even bother to calculate it for variants like Sac Chess.
Well, BW is about equal to Rook. On 8x8 at least. But you are right, quick naive counting with Q = RN = 9, BN = 8, KN = RF = NAD = 7, R = BW = 5, B = N = FW = 3 gives totals of 31 for FIDE, 48 for Capablanca and 60 for this. So it has 33% more power on a 20% larger board as Capablanca. Divided by the board width we get 3.875, 4.8 and 5. I guess part of that is due to the fact that it has an extra piece. But Seirawan Chess with 48 on 8x8 is much worse (6). And I did not even bother to calculate it for variants like Sac Chess.