There are 3 types of fighters in MMA, those who are great athletes – e.g. Tyron Woodley, those who are technically superior – e.g. Demian Maia and those who have both e.g. GSP.
Building explosive power, is arguably the quickest way to up your MMA and BJJ game. Just be careful – power training is great for improving speed and athleticism but also an efficient way to get injured – so start off with low volume, short workouts, get your technique perfect and warm up extensively.