That bar chart is the lens with 12mm shift, Guy. It's very different shot straight on:
http://www.photozone.de/canon_eos_ff/603-canon24f35tse2
I'd say it's designed for shift at f8 or so.
But these are very different classes of lens: 780 grams and 82mm filters, very large even on a DSLR, then add in the adapter; versus 335 grams, 67mm filters.
What I see here, as with many Canon lenses, is excellent centers wide open and a stop down, with not great corners - then the center falls away as the corners rise at mid apertures. You can expect this in a TS lens, these are generally much less wonderful used 'straight on', design constraints come into it, due to coverage (image circle) needs. This one does quite well on 21mp but on high res can be expected to go the same way as the new 11-24, the first lens PZ tested on the 50mp body - that is, rather badly outside the centers:
http://www.photozone.de/canon_eos_ff/940-canon1124f4?start=1
The B25 has excellent optical qualities, as shown by the fabulous MTF. I'd back it in a heartbeat at any aperture in this contest (TS used head on) on 36/42mp. It's corners are 80-90% of centers at all apertures. Then you have Zeiss micro-contrast to factor in. Then $1300 versus $1900. f2 versus f3.5. Versatile versus specialized. No adapter. The B25/B85 were designed for high resolution. The 24 TS II is a June 2009 release, well before even the D800 ushered in 36mp photography, and the game changed forever.