If you continue to play you’ll discover that silverhand weapons are nothing special, I worry about matching an opponent geared with all common garb far moreso than all legendary and silverhand. And I usually fear facing lower level characters rather than higher ones in an enemy - and this is because of the way the system works.
Generally (unless you’re on a huge losing streak), if you match someone lower it means they are geared and upgraded to teeth and are matching you based on overall power and their max trophy count - which would be at least equal to yours. There is this one guy I keep running into that has only level 12 heroes (4 to 5 levels below me), and we split our wins about 50/50 every time, and we’ve faced off dozens of times.
Levels mean virtually nothing, it’s like a normal gear upgrade. The only problem is that it could at times be an indicator that a player has been playing longer than you, and could have better all around gear.
It may help to learn the game dynamics a bit more before complaining, but it’s ok to rage quit.