Your contact seems fine. Though most of the harder shots were more smashes than actual loops because a farely sustantial number of rallies were played above net level at point of contact, so it's not very telling of anything.
The few shots played from at, or below net level on the forehand, you did play more as a slow loop (with the angle of your swing going very high). There is nothing wrong with this, it is a valid option. But that might actually be something that a eurojap rubber is better at. You can play the same shot but press foward into the ball more to get the same spin, but more speed.
The way you play the loop from a lower point of contact is maybe not playing to the strength of the H3. There isn't anything particularly wrong with your actual shots per se, you played it with the correct amount of power, and it landed, but it's a shot that scales poorly with more power.
You essentially had to hold back on power/speed to control the length of the ball, you did not hit the ball as hard as you reasonably could have, because if you did the ball would not have had enough time for gravity/curve to work on the ball and for it to still land on the table. If you had played the same shot but with a faster swing, the ball would have gone sailing into the air way past the end of the table.
Again, what you did was fine, you have good feeling for the ball, so you hit it with the correct amount of power for it to still land, and it was offensive enough of a shot to usually win you the point. But the strength of the H3 rubbers are that they allow you to instead play the shot brushing foward (the trajectory of your stroke would instead be nearly parellel to the table, with only a slight upward incline), this allows you to play the shot pretty much as hard as you like with barely any adjustment of blade angle.
I can now see why the other people say there isn't as much spin on your loops. Any gains of extra spin from the H3 is being limited by you having to limit the power of your shot due to the upward trajectory of your stroke. And for strokes played from above the net, they were really more of a smash. Hurricane rubbers genuinely do generate less spin on that sort of smash drive stroke than eurojap rubbers.
