What? Both UCSF and Stanford are also on the peninsula (Stanford not quite, but neither is SCV) and have more beds (both >600 vs SCV's upper 500's). And fellowship is the most important, but nearly most residencies of decent quality match residents into brand-name fellowships. You'd be hard-pressed to find a decent radiology residency that has not matched at least a few residents into top places like MIR, MGH, UCSF, etc. Mount Auburn may be small compared to SCV, but its fellowship list is pretty difficult to beat, with many if not most residents matching into MGH, UCSF, etc.
I'm not trying to put down SCV by any means; it's a good program, and I would definitely not mind going there if they'd take me (especially being from California). But realistically, in the end, the distinction between academic and community programs does exist for a reason, especially given that connections are important in the field of radiology. Most community program physicians tend to come from the region, while academic programs are more likely to draw from a national pool of candidates for faculty.