Smart trainers feeling heavy

So i will definitely try spining up the smart trainer first and then plug in because nowadays i just plug it in the trainer and than roll so i will try this one and just a question that does rolling up in start really matters? And for power meter currently i am not using my power meter because it is not working so i am using the inbuild power meter on smart trainer and so i want to know that does smart trainer makes the difference because in wahoo you have heavy flywheel and on other trainers like ex- tacx Garmin they have magnatic inbuild flywheel so does that makes difference?