Well for the past 6 weeks I'd say it very likely is as you say. We have some awesome crappie fishing and I grew up fishing slabs in the midwest. Go to this site The AZ Bass Zone :: Arizona bass fishing chat, news and information and do a search for "San Carlos" to check out other such reports. Many fish nearing 3 pounds also. Many of our lakes had been low due to the drought but in 2005 they all started to re-fill with Roosevelt reaching 100% of the new dam for the first time just this year. That flooded hundreds of acres of timber much of it for the first time ever. The crappie have been a little hard to target there because of all the miles of brush you can't get through to reach them but the ones you do catch are huge. I would put San Carlos, Roosevelt and Alamo up against most any eastern lakes for consistent large slabs anytime. Bartlett and Pleasant can be very good also but are stumbling right now for various reasons.
Here is one direct link to reports... http://www.azbasszone.com/forums/sho...ghlight=Carlos
and... http://www.azbasszone.com/forums/sho...ghlight=Carlos
and... http://www.azbasszone.com/forums/sho...ghlight=Carlos
and... http://www.azbasszone.com/forums/sho...ghlight=Carlos
and... http://www.azbasszone.com/forums/sho...ghlight=Carlos
and... http://www.azbasszone.com/forums/sho...ghlight=Carlos
and... http://www.azbasszone.com/forums/sho...ghlight=Carlos
and... http://www.azbasszone.com/forums/sho...ghlight=Carlos
and... http://www.azbasszone.com/forums/sho...=Carlos&page=2
and... http://www.azbasszone.com/forums/sho...ghlight=Carlos
and... plenty more report with more being caught everyday. I know of no other lake right now matching it for size and quantity, do you?