That first show was pretty much wall to wall toilet, save for the saviors that are Electribe 101. I'm convinced some Judy Tzuke Tour Jacket-related business went on with getting that Brits 1990 megamix as high as #2 in the charts as well, surely the appetite for that type of thing wasn't that huge here?
You'd be surprised, there was also Snap! and Technotronic megamixes that charted really highly around this period too - if anything they were a cheap, guaranteed hit.
I remember this was the era of independent record shops basically getting "heavily promoted" product for free from the record labels. My friend worked in a chart return shop and she told me that the reps would give them stacks of free product which they could sell at a reduced price in exchange for letting the record company reps behind the counter access to their Gallup machines and swiping the barcodes of what needed promoting whilst they were out the back making a cup of tea. The standard price of a 12" single was €3.99 back then, but you could often buy new release major label 12"s for £1.99 (or less) due to this system, I distinctly remember seeing the Massive Attack - Daydreaming 12" for 50p in a few shops on it's first week of release due to this type of promotion.
I would say that the Jamie J Morgan track was definitely involved in some kind of shenanigans for it to reach the chart as there was zero interest in it at the time, I never heard it played anywhere in clubs or on the radio, especially compared to Beats International and JT & The Big Family which you couldn't avoid in the clubs (both of which were on smaller labels).
Electribe 101 seemed to have countless 12" remixes/rereleases at £1.99 and whilst they had pretty decent tracks you'd never hear them played out anywhere (I was DJing/clubbing 5 or 6 nights a week back then).