My experience with BF big baby t and Big Baby 2 compared to my GR 210 and 112 is that the bottom end is bigger on the BF's. I don't have my BF's any more to do a side by side comparison, but I was always fighting a bit of boom with the BF's. That's why I bought a pair of BF one10s, and they were much better for me, although had to boost top a bit to compensate for lack of tweeters. At the end of the day I was left looking for more volume on occasions, I was pushing the one10s as far as I could without breakup.
I bought the GR at210 to add to the BF one10s, but the GR 210 was much louder than the 2 one10s and didn't pair too well. So the one10s went and I got the GR at112h instead. I think the BB2 was more FRFR than the GR cabs....although I've still to gig the GRs, only played in the house so far. I like the tighter sound from the GRs. I would be interested to try the GR at110s that are now out....had they been out when I bought the at112, I may have gone for a pair of these instead, to go with the at210.