Personally, I think the problem the OP is experiencing is not specifically the fault of the X2010, on its own. I think it's wrong to blame the x2010 alone for what he reports he's feeling.
I think it's indicative of a more
systemic problem in gt5... The fact that there's
no way to earn the amount of credits you'd want to buy all the cars you want,
just by simply playing the game in a naturally progressive way.
There just wouldn't be the urge/temptation to use (& be bored doing it) overpowered cars to "grind for credits", or to "get through something without spending a lot of credits", if the races paid out better.
For example, my bf & I: We run bspec remote races - but we don't auto-run them for hours of the day. We grind seasonal events (and that indy one in aspec) for credits... but not for hours. And we certainly don't do that rubberbanding thing.
Between the 2 of us sharing the ps3 to play gt5, other games, as a blue-ray player, and to stream netflix... It just isn't possible, let alone wise or enjoyable, to do those things in excess.
So for us, the problem of getting credits to buy "reasonable" cars for all the races - even if we SHARE them online with each other... is, well, a problem.
So yeah, I used the x2010, borrowed from a friend, to win the like the wind to get the Toyota Minolta, which I wanted, so I wouldn't have to buy a car to win like the wind, or to just buy the Toyota Minolta. Etc Etc Etc.
I would have much preferred to just be able to buy various cars to use in races, to see if I could win. But the waste of credits would be too much, and would cut into my collecting the cars I actually want, and buying cars to use in online racing...
I'd be stuck only being able to buy the cars I need to experiment with various races.
Then you can easily imagine thinking - well, why not just shove the x2010 (or something else inappropriate) into whatever races, and you won't have to waste any credits at all on buying 2 or 3 cars for one aspec/bspec race you don't even care about much.
I think it's not really about the x2010. It's about a more fundamental flaw in the whole "earning up" scheme in the game.
There's no logical flow. Do X Cup & you'll win a car for Y Cup, win Y Cup, and you'll have enough credits to buy a car for fun...
It puts you in a position that either you're tempted to use the x2010 to win races for the sake of it, or you use the x2010 to win races to grind for credits... in order to buy "appropriate" cars you need for just one race, etc etc.
And of course this isn't limited to just the X2010, you can insert other cars in various ways & it's the same point. The earning scheme is just messed up in gt5. There's every incentive and no restriction in the game to keep you from using overpowered cars, and little incentive from the game to not use overpowered cars. The game directed challenges are in all the wrong ways. (My bf laments the lack of aspec points depending on cars used like it was in gt4.)
People who have the time & patience to grind, or are not worried about burning out their ps3 by auto-grinding, don't necessarily experience what I'm talking about, I'm sure. But it's the same problem they have that makes them do that. If you said those people are cheating, they'd say "I don't have time to waste doing things that are not enjoyable". Same problem.
However, if that were me, I'd spend most of my time reversing out of barriers....
Me too! haha.
And that demonstrates. The x2010 can in one way be "too easy", and in another way it can be fun & challenging... it depends on how/where/when/why you use it.