It is easy to criticize systems that are in place, particularly with PvP, but similarly to how theres always that friend in your group that always complains about the location we chose for dinner (if you hate all our choices for eating, dont say "Anywhere" when we ask you wtf you want to eat), or in this specific instance, what exactly do you propose the matchmaking system should prioritize.

As far as I can see, theres several options for matchmaking for a system like this:

1) Match based on power

2) Match based on level

3) Match based on W-L ratio (or points in DB/arena)

Instead of throwing out the snarky question of "is it possible for 170k to win 390k", perhaps you could suggest *ternative system that would be preferable to you. If you chose "Match based on power", then what happens for the various scenarios, in the real world where you dont have exactly X power vs X power. How would your system handle the expected scenarios, eg:

a) What power +- range to allow matching.

b) What happens when no one within the power range is in the queue

c) How do you balance matching an unfavorable matchup vs an infinite queue.

Ultimately all systems have their pros and cons. There will always be a bigger fish in the pool, if you cant propose a new system, then you might want to focus your efforts on figuring out mitigation efforts to alleviate the difficulties (like more revives as per Dumbledores suggestion), and suggest it to your server/cluster representative to bring up. Complaining about other players having stronger power or better ninjas doesn't help anything. Heck better ninjas don't even feature in the equation and you will still lose to equal power with better event ninjas, with a potential next thread being "Can Konohamaru win against Naruto?". There's no point discussing anything if your ultimate goal is just to get a win without thinking through the process on how you can be constructive in fixing the gaming experience for the event.