Thats not a minimap on the game pad, a minimap is a small section of the immediate area surrounding the player, it is only a small section, because its supposed to take up an unobtrusively small portion of the screen, like a small circle. Such a map is useless in splatoon.
The map on the gamepad, is the WHOLE map.
They explode in your color ink, a tiny area that can rapidly be repainted in seconds. they are gone for 3 whole seconds, and can teleport back to any team mate instantly.
Killing an opponent can let you paint the area they were in uncontested, but that matters little when people who think the game is about killing people are fighting in a contested area while someone with a brain goes around and paints the rest of them map with no conflict and gets a landslide victory.
One of the most apparant strategies Ive noticed with the charger is to get people mad and focused on killing me and then just avoiding them, popping up where they can see me, and avoiding them again, while my team paints the rest of the map. Sometimes I super jump out of there, and the whole team misses it, and combs one area looking for me, while we win with 75% of the map covered.
Splatoon is NOT like these other fps's you keep trying to bring up.
Its not like them.