Your dogfight server blows.
The only reason I can fathom as to why it gets as many players as it does is because people recognise your name from the stuffty jail deathmatch you host. The entire thing is horrendously low quality. It is of the level of gameplay that you can expect from players who just started the game and wanted to host a server and make some deathmatch project with some friends they found in a family rp. That's not how you set up tier tactical weapons at all. It's an odd mix of tier one guns which are built to be worse than the tier two guns but they're mixed in together. Why is the terrain all flat except for the hugely steep snow piles which are all at the same height? Why don't you just spawn people with the parachute from the get go instead of putting it on an item spawn in base near the planes? Wouldn't that save time for players making respawns less tedious? Why do all of the vehicles youve chosen not match up at all? Default tanks and gravity cat's APCs? The bases are all flat and boring and too big for what they actually contain, which is some vehicle spawns towards the hanger, a lot of crates for cover and a flag spawn. You could easily condense the size of the base and the map would also feel bigger as a result, dispite the fact the whole loving map is awful and flat and boring to look at and drive on.
Also? Charging for grenades is the worst loving thing in the world. You should feel ashamed of yourself for being so loving manipulative as to offer straight out upgrades for real money.
The only reason people are on your server at all is because they are either new or extremely young. They see all the people in your server and a t key on the keyboard that lets them type in as many pewdiepie references as they want instead of trying to build anything or get creative with the things this game offers. The only reason they stuck around is because they don't know any loving better.
I would carry on with all the reasons why your server is loving awful but I doubt it matters at all. You will continue to gather around 60+ unique vistors to your servers every single day no matter how awful the crap you put out is because you are some kind of hosting celeb. Meanwhile all the people who actually want to impress people by doing something new, who create actual unique content, addons, builds, and all the people who make deathmatches that explore fun new gameplay using blockland's movement and shooting mechanics as a base will continue to lay stagnant and ignored, simply because you want to remain top of some a serverlist. Bravo, tezuni. You've hit the bigtime, dude. Or maybe you did 2 years ago. I don't loving know any more. I stopped paying attension back when you were hosting 2 servers at once and they were both around 16+ players at any given time irreguardless of actual quality.
Congratulations for overthrowing everyone who ever wanted to do anything slightly original or cool with this game. Have fun with your 100 usd. I'm sure you'll have more fun with it than most of the kids on your servers ever did.