I also found Zupapa MVS a little difficult but I managed to finish it in 2 player mode with a friend. But that was using the Gung-ho attack everything technique instead of actually trying to finish the game without lossing any life. I also have not played it again after I finished it.
Now I guess on the oppinon of NGFUSA aka Chris and dion I guess I will chime in 2cents.
As Big Bear stated if you are happy with them let it be. I am personaly Fine with that and do not look down on you. But the thing you have to remember about Them is what is the end result of the deal.
You recieved a NGH version of Zupapa for a Twinkle star sprite conversion.
I would say the Zupapa is more then likely a Eprom burn. Just for the following reasons.
A) The NGM boards are protected and thier conversion does not use the protected boards
b) they have been offering the game since before it was released so obviously the knew how to copy the chips for awhile -OR- were lieing about having it for sale in the first place.
Do I know 100%, no because I do not own it nor would I ever send them money for it because of what they do.
You also have to look at what is going to happen with the trade you made. well they Reprint and repackage the Twinkle star sprite conversion you sold them and sell it as a Offical SNK version? After all I have seen them offer repackages as orginals before. Why would they need a twinkle star sprites in the first place since they have acquired according to them several large orders of NGH's with most every title out there. You have to look at the big picture with them.
All in All I personally feel dealing with Chris and Dion is a bad Idea. Not because I am Jealous of them or "a fool" or a victim of "Blind fury". But because I do not like thier goals.
A) replace SNK inserts with thier "Correct version" trashing the SNK version and not giving the buyer a choice
B) Using stickers and stamp in the carts they will sell you making them worth less and harder to weed out.
C) the way some of the members on this board have been treated by them.
D) Thier PR skills
etc. etc. etc.
That is the real reason I do not support anything Chris and Dion do. Even if everything about them was a lie and everything they said was true. The above would still remain constant and be enough for me not to support thier efforts. Now add to that everything else they had done and you can see why they are disliked so much.