no way breh
there are varied transfer quality though. some bluray transfers are done better than others. pixar is a company that does their bluray transfers flawlessly. probably because it's easier to do with digital films, but their bluray movies like Wall-E are gorgeous and you're only going to get that experience from a blu-ray disc or a non-compressed full blu-ray rip.
I said "many". not all or most. newer movies are more likely to have an HD source. especially something like pixar movies. but many blu rays of older movies are basically an upscaled dvd