Ya, results seem a bit mixed to me as well. Videos #1 and #2 the Original PS3 seems faster, but in #3 and #4 the PS3 Slim seems faster.
Perhaps something got lost in the translation... if anyone can clarify what they are demonstrating in both sets of videos here it'd be appreciated.
Google says for the first two: "Result, the new videos as long as the PS3's slow start like the old better than"
For the second two: "Here are the new videos as long as the PS3 is like an early start - better than the old"