Level 30 vs 60 doesn’t mean anything other than unit unlocks. You don’t need skill to reach level 60. Just time. It’s usually about 3 months. Anyone can reach level 60 even by losing often. There are many that are at level 60 that lose a lot. And as far as facing other players with units that you haven’t unlocked yet, there is a counter for each and every unit that they unlocked that you don’t have that’s available to you. For example. Talons and banshees can take down a Basilisk or an Orca Bomber. Orcas and Banshees can take down a Mammoth Tank. If you don’t use those, than you don’t know how to play.
As far as actual unit levels go, that’s a different matter. You can only be matched up with someone with the maximum unit levels allowed by the league. So if you are in Platinum League for example, the highest unit you can face is a Level 10. That’s it.
If you think what I’m saying is wrong, than prove it. Show us a screenshot of you playing a level 11 or 12 in Platinum League. If you cannot, then it’s just a bunch of hot air from someone who just loses by using the wrong counters.
Post a screenshot of your deck that you lost on and I will without a doubt tell you why you lost because of the wrong choices of units in your deck.
I’ll be waiting. Prove me wrong.