The YouTube sensation streamed the spar with Speed at the same time Paul was making his boxing return against Andre August.
And after three comical rounds – where Speed was dropped and sent through the ropes – KSI said enough was enough.
He gracefully handed Speed victory after pulling himself out, leaving the streamer in tears.
KSI spoke out after the spar to suggest more people viewed it than Paul’s fight with August.
And he claimed Speed landed more punches against him than the 39 Fury managed in October.
KSI told Fred Talks Fighting: “I think it was definitely the event of the night.
“I think there was a lot of boxing fights happening at around the same time.
“But I’m pretty sure there were more people were watching ours than anyone else’s.
“But yeah man, tough opponent. I think he hit me more than most my opponents, I think he hit me more than Tommy Fury.”
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KSI, 30, was beaten for the first time by Fury, 24, but the controversial points decision is still being appealed.
Meanwhile Paul, 26, knocked out August, 35, with a right uppercut in round one and responded to KSI’s spar with Speed afterwards.
He said: “I don’t care it’s just two different things, right? He’s chasing views as a 30-year-old man and I’m chasing legacy and belts.
“All kudos to him, I hope he makes his wildest dreams come true.”