I am seeing both sides at the moment. Dd is 3 and NT and is currently flexing her muscles and trying to take control of everyone and everything around her. All very common and typical in an nt 3 year old.
Ds1 is 10 and has ASD, when he tries to control what we do or where we go it's very different. There is a real sense of panic that results in either tears or anger if we can't or don't do things his way.
As Triggles and LittleMissGreen said with typical toddlery behaviour they just 'want' things their way and might not like it, but can cope if they can't have what they want. With a child who has ASD, they simply cannot compute doing it any other way than their's and if they have to, it results if high levels of anxiety and panic - hence the tears and anger that people often refer to as 'meltdowns'.
My dd really tries it on, she will say flat out 'No!', whinge, wail, cry and tantrum to spectacular proportions at the moment, (little minx has even tried a few of her big brother's more obvious tactics on me just recently) but the minute she realises she's not having her own way and no really means no it's as if someone has flicked a switch and she accepts her fate! So with her, she responds to standard parenting techniques involving firm boundaries, rewards and sanctions.
Ds on the other hand will flick straight into total panic mode at the first sign of things deviating from the norm. His body language instantly becomes very obviously stressed and agitated and if we can't come up with a way round the presenting problem it will inevitably end in total 'meltdown'. With him there's no point being angry or imposing sanctions, because he has absolutely no control over it. It's the fear and panic taking over that results in him shouting, screaming and wailing. Frankly he is as upset about it as we are when it happens. He is just as aware as dd is of our parental boundaries, but is unable to work within them when it's something that he really can't cope with not being done 'his way'.
These days we know ds's triggers and can work around his 'rules' most of the time, so meltdowns aren't as common as they used to be. It makes for a happier ds and more peaceful house, but is just as stressful in other ways as it means we are all constantly hypervigilant and walking on eggshells.