Just for the record:
Stealth is run by a park that, on any given day, apparently has half their star lineup down. Odd how its near-clone, Zaturn, never has issues
Lets just point out that Stealth is rarely broken down due techanical issues. Usually its the fact that it can't quite make it over the top hat. Yes, 2 of the trains seem to run a little slower but there are multiple potential causes.
This off season it had major work done on its motor replacing large parts of it, and after that work was completed it has yet to break down for any significant length of time.
Thorpe's reliability really isn't that bad, lets not forget that Thorpe hasn't had a single ride down for atlest the last 2 or 3 weeks. Thats not bad, and many parks will probably struggle to attain such a long period.
The main reason, as I've said before for Thorpe's bad reputation is the fact there's some member of CF on park on almost any given day, and there ride availability is published online, meaning when something is broken, the world knows about it. Compare this with say Alton, people don't visit as regularly, and there is no ride list published by them. When I visit I often find atleast one ride down, usually Submission, yet because this ride isn't half decent, no one actually cares.
Then, Alton's big 4 that people would really care about missing are obvious. Thorpe is generally considored to have a big 8 or 9. It's easier to keep 3 coasters renown for good reliability, and one accelerator open, than several coasters and flats that are in several cases prototypes and select ones which have been poorly made.
But back to the point, I rarely find Stealth down due to issues of a mechanical nature, and it certainly is no worse than Rita, which also isn't too bad for reliability.
To bring it back on topic, even two of the accelerators considored to have bad reliabiltity, arn't actually that bad at all.