It's a dumb comparison to begin with. Completely different development models, different starting points, different goals, etc.
As for my own opinion, I found that the "target: Korea" aircraft feel was nearly spot-on for reproducing the performance and handling of a Korean war era jet. For flying combat in jets with guns, TK was superb. I didnt' fly the WWII targetware planes very much but frankly they didn't "suck" and grumpy comparisons between two flight models is kind of silly. Every sim will have its own character and development goals, period.
As for the quality of the terrain and other eye candy in targetware... The business model is if you don't like the way it looks, get off your fat donut and generate some content yourself. If you just complain and don't contribute, then STFU/GTFO. That's the main reason why I tried to be really active in the alpha and beta testing when AH first started... I had some preferences and wanted to contribute instead of just whining about things I didn't like or didn't think were realistic. It's pretty clear when the whine/contribution ratio gets below 1, and both targetware and HTC have ways for people to contribute if they don't like something.