Yep, Mike, I understand the differences in the engines, but it just ain't that easy with electric. But, I am a big subscriber to the bigger the better with glow. Unfortunately, with electric, usually bigger means more weight and more current draw... and the problem grows exponentially...
But, yeah, I do wish there was a simple number system that one can say for this plane, get this number motor/esc/battery combination and off you go. The trash that comes with the RTF's is almost useless so if a guy wants to get more out of his model, well, the pit opens up and woops.. we fall right into it.
Dick.