26" inbred max tyre clearance is 75mm in width for 559/26" wheel. Slot dropout version can also fit some 2.2" x 27.5"s easily.
Surly 1x1 can fit 70mm even with 584/27.5" wheel.
I think they both are equal heavy and tubing is pretty much the same in substance.
In my opinion those frames can't be compared. Inbred is much more modern geometry MTB with lower standovers and longer reach. Surly 1x1 is taller non suspension corrected, more 90s mtb geo all around frame.
Inbred is nice and functional frame, from hard core trail riding to commuting. Debending on fork, size etc. Surly is more for freaky builds and for fans of more old school geo, with modern touch.
Both nice frames