Really interesting question, thanks anon,
Porn usually isn’t real, a lot of what you’re seeing is either edited or faked, so don’t compare yourself to them and feel bad. No matter how experienced you are in denial, if a good vibe on full power is being pushed against your clit, then at some point it will make you orgasm (unless you struggle to orgasm at all which can be a different matter).
However, in my experience there is definitely a difference in how far you can be pushed when you’re doing it yourself compared to someone doing that with you. Whether that’s in person where you’re able to completely focus your energy on resisting going over the edge, or when playing with someone long distance just having the expectations from them to live up to and the encouragement – I find the phrase ‘Don’t you fucking cum!’ said sternly at the right moment is remarkably effective.