Yes, he is - The Sharp, 45 inch plasma is about 8 grand while most HD 50" plasmas are about $5,000-$10,000.00 - though the 10 grand ones are VERY expensive. A good Panasonic 42 inch 1365x768 plasma will run about $4,500.00 So, the equivalent LCD technology, right now, is considerably more expensive at the same size - or near the same size - as plasma technology.
The top reason why, in a similar installation, people don't use the NEC 40" LCD instead of the 42" HD plasma, is because the LCD costs 50% more. The 2" is negligible, but the cost is not. This is something I deal with on a daily basis and the reason is the same: LCD costs to much compared to plasma of equivalent size.
LG's 71" plasma is a gimmick, much like a Lamborghini. It is not a high production run product like 42, 50, and 60 inch plasma are. So, that is not in the ball game. Sharp's 45" LCD is a high-run product as is the NEC 40" LCD. Those are good products to compare directly to plasmas.
I don't want to eat the apples you munch on if you think a 71" display is comparable to a 45 inch display. In the world of plasmas, when 60 inch sets first were available they were $25,000 while 42 inch sets were $5,000.00 That extra size is like diamonds - it is more exponential, than direct.
Likewise, a 20" lcd can be had for under a grand while a 40" version cost 8 times as much for twice the size.