Sure, Kit-PvP has some pay to win aspects, but it's not as pay to win as people say it is. You can get good stuff quite easily without a rank or a high donor rank helping you out.
If you're good at PvP, you can use kit ninja to get the sharpness 2 sword or even a sharpness 3 sword from monthly kit, put it in your enderchest, then die. After, you can use kit viking, keep the armor and get the sword, and boom. Sharpness 2 - Sharpness 3 with permanent strength 1. You can get easy kills. You can hopefully get a good kill and get their loot to become even stronger, or you can get a high kill streak by killing noobs and then claim your reward. I am pretty sure there is an op axe you can get at 10 kill streak, and so on. I got 3 egaps by 200 kill streak, along with 7 legend kit vouchers and 5 ultimate kit vouchers, along with some egaps, an epic key all and countless of sharp 5 fire 2 swords which you can get from a 50 kill streak.
You can also complete challenges to give you some extra stuff, for example: Kill 25 players with a bow, it will give you a Power 5 Punch 2 Flame 2 Infinite 1 bow. Kill 25 people with no armor, it will give you a full p4 u3 set.