No, doubt, the F-35 will be a success bcz :
1) the Americans will buy a lot of them
2) Many international partners will buy it
The F-35 will have by the time it will enter service the best electronic suite around, a very low RCS ( i avoid on purpose to say stealthiness as there are also other signatures : visual, IR, EM, audio), it will cost a fortune (good old F-16 days of 30 mil $ are long gone)but do you think that only the numbers will make it a good fighter?
It is by design a formidable bomber with powerful engine - the most powerful single engine fighter- and internal weapons carriage which will enable it to hit fast and hard.
Do you think that it will be a cost effective aircraft? How easy is to maintain a low RCS frame in shape? If it is difficult and costly, maybe the allies will be forced to buy a lower RCS version.
Forgive me, but the letter "F" for this aircraft doesn't seem the right one. Maybe F/A-35 will be more appropriate....