i think modular is for people who have wanted to fly since being young and spend there weekends washing, refueling planes to earn some money to get there ppl quite young. Or people who want to do it in stages for any reason.
On the other hand Intergrated is either for people who decide on a new career and have saved up a lot of cash to get there licence quickly or people who wake up one day and say "i wanna be a pilot" and have the money or take out a big loan on daddys property.
Just my thoughts so feel free to disagree