The question, if any, shouldn't involve EM's rookie year, but how he's playing this year compared to Lee. I'll assume that EM's defense is worse, but they've played very close to the same minutes per game--24 for Lee and 23.8 for Moore--so some comparisons can reasonably be made:
Moore is ahead of Lee on PPG at 9.3 to 6.5, rebounds at 2.4 to 2.3, assists at 2.9 to 1.2, blocks at 0.4 to 0.2, and 3PT % at .391 to .295.
Lee has the edge on FT% at .824 to .722 and FG% at .478 to .440.
Lee is an inch taller at 6'5" to 6'4" but more than 3 1/2 years older.
For the salary, it's hard not to see Moore as the better deal.