Fair enough point, there is no denying that Gorsuch is to the left of Scalia (though Kav seems better than Kennedy so Trump should be 1-1 on your scale, no?), I just rate them based on how they vote as opposed to comparison with their predecessor.
As for Roberts, no he’s obviously not a pondscum commie and pretending he is one is as dumb as pretending a squishy GOP Senator is just as bad as Bernie Sanders.
He certainly appears to be worse than Gorsuch though.
If I had to bet money on whether Kavanaugh would do that, I think its more than likely he WON'T, so I am assuming Trump is 0-2 at this point. There's a slim possibility he could still attain a 1-1 score though, maybe a few years down the road, Kavanaugh will pleasantly surprise us, and write a forceful decision striking down homo marriage as the "law of the land".
Even a lot of hardcore Trump supporters had qualms about Kavanaugh, but (like myself) held our nose and backed him because we assumed he'd be better than Anthony Kennedy, and after the Dems went on an insane jihad to destroy Kavanaugh. He was some mediocre, mildly conservative judge, but the left portrayed him as a sexual predator, Attalia-the-Hun type madman who was Jesse Helms on steroids.
Like the Trump fanboys, my ONE hope was Kavanaugh actually WOULD end up voting like that on the court, solely as "payback" to spite the RATS who tried to ruin his lifelong career and reputation. Alas, I don't think its happened and I do not think Kavanaugh has turned out to be that strong of a conservative.
There is no doubt Kavanaugh is better than Roberts though, and Gorsuch for that matter.
The weird thing is that Gorsuch was CLEARLY a WORSE pick than Kanvauahgh, but had virtually no opposition from any mainstream conservative group (shades of 95% of conservatives drinking the "Souter is Bork 2.0" kool-aid in 1990)
And speaking of that, George H.W. Bush's stated goal was to name a judge that would be a "home run for conservatives" and "Bork without a paper trail"
So he was 1-1 in accomplishing that goal.