There are 3 kinds of bad stats
1) The Zaltzman
These are the kind of stats that are generally just said for fun. They're silly and pointless and don't really mean anything, like pointing out that a tailender has a higher T20 strike rate than Chris Gayle because he's faced 4 balls and hit one for six in his career. These are often called bad stats by grumpy old huffs who don't know how to use a query button, and are convincing themselves that since the entire internet is the boring **** they have on Facebook that people who take fun in these 'have too much time on their hands' or similar mardy statements, having missed the fact that the stat was never intended to be taken seriously.
2) The tired Sky Sports intern
This is the kind of stat where it's midway through a game, and you have a message from the director that something unusual is happening, we need a stat to describe it. So you load up Statsguru and find that yes, this partnership is pretty unusual, it's actually in the top 5% of stands like this, that's how good it is. But Sky don't want to make Nasser read out that it's roughly the 120th best ODI partnership out of tens of thousands, so you apply a bunch of filters to make it sort of top of something. 'This is the 2nd best 3rd-wicket partnership for South Africa against India in a tri-series". Uh huh, says the director, we'll show that at the next ad break, now start editing the batsman's highlight reel, he's nearly got 50.
3) The disenginous flag-waving tit
This one is for CW mainly but will tend to show up more often on info-graphics that get shared on Twitter a lot. It's where you find a stat that suggests something about a point you had decided on last year, and so will share it. Later, when the point itself, which is invariably something that makes a player from your country better than a player not from your country, is questioned, you wheel out the stat. If the situation regarding the player's record changes, don't worry, just start making arguments on why subsequent events don't count or continue applying filters to weed out stuff that doesn't quite fit. Remember, the stat is there to serve you, and if it doesn't do it's goddam job you'll fire it and find one that will.