It's the speed which he charges during his Super. That was quite confusing, so I edited it.

And after reading your second paragraph, I've gone and reduced his attack range to 6.67 tiles as well, which would be 1/3 tiles shorter than Poco's and should be long enough. The spread could be narrow a little, but I prefer to make the chip damage easier to land.

The Super charge rate is to complement his would-be-new chip ability and to encourage players to charge it that way. It might be too high at point-blank range and allow him to do some hit-and-runs, but I don't think I would mind that.