I'm honestly not sure if the opinion of anyone here counts, other than Miragefla's.
As for the 1v1 players, their ranks were in the low 100's. I would take their opinion with a little bit of skepticism. The 1v1 rankings are pretty stratified. There is a big difference in skill between people in the top 30-50 and someone in the low 100's. My best rankings in 1v1 were in the upper 200's/lower 300's. When I would play a 100 level player, I'd usually lose, but a lot of the games were close. When automatch would take too long and decide to place me against a top 10 player, it was a completely different game. Most of the time I would be out-positioned so badly that the game would be lost at the 10-15 minute mark. However, sometimes they would decide to test some troll strategy. Von Ivan once built 3-4 raketens against and used them to cap like crazy. It worked well for me until he decided to stop messing around when he was down to 200 vp's. He then completely wrecked me in the first serious battle. I could have came here and started a thread "Raketens OP", but they aren't. In the same manner, I don't think that Scotts are OP.
Lastly, USF's early and mid game aren't in good shape. While the tech changes may help, it seems way too early to be asking for nerfs to a faction that hasn't even been shown to be competitive yet.
I'm not sure how you decided on where the "cutoff mark" is for a player whose opinion counts. Most players in the 100s and 200s understand the game mechanics and general strategy of the game, but don't have the micromanagement ability to climb higher.
In any case you are indeed correct that the 1v1 rankings are highly stratified - at rank 100 or so, I struggle terribly against top 50 players because their micro is much better, and meanwhile (contrary to your experience) I've never had a single close game against someone in the 300s because my micro is much better.
The problem though is that you dreamt up a scenario in which rank 100 players were losing badly to Scotts plays and hence claiming that it is too strong. I could do the same hypothetical BS and imagine that you lost a Scott to a single Panzershreck squad, and hence think the Scott isn't good at all.
I use Scott-Jackson-Pershing every single USF game - it might be a playstyle issue because I can get careless with my rocket artillery (which dies to 1 rak shot), but the Scott never dies, so that's why I rate the Scott highly. And I do think that's the general thrust of most arguments about the Scott - it's very low on micro-tax since it has deadly auto-fire with good range, and gets away from trouble extremely easily because it has a light tank's speed and needs 3 shots from a tank or at gun to kill.