If you have more than 2 kids the minivan is the clear winner. A two row SUV can't hold 3 car seats, and even a 3 row SUV will have trouble, plus strapping kids in is way harder.
Actually SUVs often have more width interior side-to-side in bench setups, making it possible to put in 3 child car seats side-by-side (child seats are often very wide, full width of seat and wider than topical adult hip width). Minivans have less, especially in back row where wheel wells are more more likely to be involved since the minivan doesn’t sit as high as an SUV.