The answer would be that they are different and they offer their unique packages. So, you’ll first need to understand what are the main differences between them and then pick the one that’s more closely aligned with your goals.
Bonuses
Playtech seems to offer stronger bonuses, including those on multiple deposits. So, you should carefully a possibility to gain more free money for terrific play at the developer’s slots.
Range of games
At the best Playtech casinos, you’ll find some of the major blockbusters like the Avenger series. But, if you dig deeper you’ll quickly see that there’s just a few of the games from this developer. Meanwhile, Microgaming already has 800 items on the market with the additions constantly popping around to amaze players with stunning graphics and animations.
At the same time, Playtech rolls out at least one game every month, so they two developers might have a tie in terms of the new entrants.
Spread your bets across the two networks and choose the slots that you personally like as it’s more about fun than doing some nerdy business modeling here.