Take a little time with maps and with websites like ridewithgps.com.
I haven't mapped it out - but Yosemite Valley is at 4000 ft and Crane Flat at 6000 ft.
Thus it is only another 4000 ft to Tioga Pass - - then a killer downhill to Lee Vining.
The Pass you mention may only be at 5500 ft - but you drop 6000 ft, then climb again.
Not to mention that nearly all of Hwy 49 is a roller-coaster.
I would be willing to bet that the NET climbing is about equal - Nevada vs Valley.
(The ACA route will have significantly more climbing.)
Also, the gradient of Tioga Pass Road is quite reasonable heading east.
Yep - the Nevada route is almost 100 miles shorter and 2700 ft less climbing.