The Heysel disaster was dealt with quite rapidly, mrs o, despite one or two delays. Arrests were made, people were charged with manslaughter and dealt with summarily. Appeals against lenient sentences were heard and upheld, with some sentences being extended.
Compare that with Hilsborough where lie upon lie was told, statements were altered, sections of the media swallowed everything the police told them as true and the lives of hundreds of people were virtually put on hold for 27 years.
I don't think for one minute that anyone is suggesting that ALL Liverpool fans are perfect angels - every club has it's 'hooligan' element - but the weight of evidence in this instance supports the claim that lies were told from the start in an effort to put the blame on those arriving late for the game.
Both were tragedies; Heysel was caused almost entirely by hooligans, Hillsborough was not.