Yep, that was me. The other was Old Goat.
My dealer was a Hustler and Big Dog dealer, so I could compare the similar models on the spot. Big Dog are made in the same plant as Hustler, and are designed the same. The differences I saw were lighter gauge metals used in non-crossing model parts, and lesser engine and tranny's to keep their price down for a residential appeal.
I had the R754PB power bar, which was neat and unique on the outset, but I grew to dislike its use. I would buy a Big Dog again, if my local dealer wasn't such a feminine hygiene product.