Mankin is responding to a slightly different question in this clip, but in the process he covers the PBP.
Ichiro has different swings. IMO the one posted in the original post shows him with his weight at contact slightly forward of center; whereas Ruth has his weight centered to slightly back of center. IOW, Ruth hits slightly further back on his axis than Ichiro does in that particular clip. Ruth makes contact with a straight front leg, Ichiro makes contact with a flexed front leg.
I've seen clips of Ichiro with his weight more centered and his front leg straight at contact, similar to Ruth; but this isn't one of those clips.
Ichiro has different swings. IMO the one posted in the original post shows him with his weight at contact slightly forward of center; whereas Ruth has his weight centered to slightly back of center. IOW, Ruth hits slightly further back on his axis than Ichiro does in that particular clip. Ruth makes contact with a straight front leg, Ichiro makes contact with a flexed front leg.
I've seen clips of Ichiro with his weight more centered and his front leg straight at contact, similar to Ruth; but this isn't one of those clips.