What are you complaining about? Arena is literally the easiest it's ever been at the moment. How much easier could you make it?

95% of teams I face are 10k - 100k more powerful than mine.

How  long  have  you  been  playing?  Arena  does  get  easier  as  you  pull  better  champions  and   attain  better  gear.  

Possibly that's exactly the problem - newbies can waltz into gold IV where obviously there are many teams that can tear them to pieces in five seconds, then they complain because they don't realize they're ridiculously high up in a tier where they don't really belong. Especially early in the week, shortly after reset. 

I have complained about arena in the past, but i have to say right now i think it is easy to gain medals?

Just curious if you are new? Arena is vital to the game due to the greathall, i wont lie about that, but if really new then i would say a good dragon/spider/fire knight team is probably even more important and good gear from dungeons will help you in arena.

As Harbby's asked above, how long have you been playing?  Just trying to gauge what champions you have at your disposal.

Team power is a good general guide, but isn't the be all end all of the arena.  Most of the issue is more around building a solid team with a good strategy.  If you figure this out, you can usually win matches against teams that are much higher team power.  I frequently beat teams that are 50K to 80K above me, but every now and then I lose to a team that is 20K less than me simply because they have optimized their speed, turn orders and champion sequence/skills.  

I guess what I'm saying, is that instead of worrying too much about the enemy team power, focus more on what champions you have available in your roster and what options there are to build a solid team on your end.  A good cookie cutter build is a speed lead, AOE defense down, AOE attack and then nuke.

The team power of the opposite team is not important. The champions of their team are. If you are new and the opposite team has a champion with turnmeter increasing skills (Arbiter, Seeker, Gorgorab, Apo or stuff like that), don't pick the fight - regardless of the team power. They will be faster, if you are new, you don't have the speed gear they have.

The team power is not important. Most teams without speed champ that are below gold in todays easy arena are poorly made and can be beaten, even if they have much higher team power than your team.