The tooltips wouldn't be as intrusive if they were displayed only with the mouse pointer on a specific column. The "Quality" column would be good for this (IMO) since it's close enough to the "Name" to be convenient but not in an area where most people would normally be wandering the mouse pointer. And with it thus restricted, the tooltip could remain visible indefinitely.

If there are a bunch of identical or similar items in the Name column, I can see why a tooltip would be far more desirable than having to click to get a dialog box, then click again to dismiss it.