Two observations. First, IMHO he's asking on the high side, and clearly paid too much himself. He may have had too high an expectation of the machine to begin with. Second, all machinery performs within its capabilities, based on size and construction. Sure, my 7B takes "only" a 1/8" cut in steel, and a 16" will do 3/8", and that's nearly in direct proportion to their sizes. My shop is filled with small machines, I work on small parts and have a need to be able to move the machines myself when needed. Most of my parts would look pretty silly in the vise of a 16" shaper, and I very rarely find myself wishing I had something bigger. Same for the mill and lathe. When I do, I have friends that have large shops that let me use their machinery. Happens maybe once or twice a year. But for those that work on larger parts, the 7B would be the poorer choice. Everything in proportion.
"Against stupidity, the gods themselves contend in vain"
Friedrich Schiller, 1801