Let's look at the 2 different ways the Metlzer has been used- you run them down to the beads for 17k each.
Mine sits getting weathered and cracks. You replace them before they can crack.
Your method seems like an odd way to evaluate a whole company's line of tires and then characterize them as sucking. I've always considered how they work on the bike over time and miles as the bike is actually being ridden as the best criteria for judging a tire's worthiness. But it has now occurred to me that others may have different criteria that is important to them.
So I asked myself, can I still recommend Metzelers if somebody needs a tire that will be on a bike that sits still for years without developing unsightly cracks? I happen to have a good selection of old used Metzelers in my personal tire dump that have been laying in the dirt in the Idaho summer sun and cold winters for a few years. I figured that was a good test. I also looked at a ME88 made in late 2007 I just took off the bike a few weeks ago. The others include a 11 year old ME99 and a 6 year old Marathon 2. A representative selection, I think. Photos are below.
After examining them, I have no qualms recommending Metzeler tires to anyone that needs tires for a bike that never moves, even one that sits outside in all kinds of weather. 
Good analysis Greg. Ignore our newest Troll, he doesn't know what he's talking about, but he desperately craves attention, so he'll say stupid things to elicit a response. He's like a bad smell that just won't go away............... (but we'd like him to)
Yeah thanks Terry. Appreciate it. In fact, I'd appreciate a lot less attention, and some adult behavior from others.
The title of thread says tire opinions. I gave my personal experience direclty, and then my opinion because of it.
Then 2 or 3 others had a #$%* fit.
Now I know this: No Metzler made was ever a bad tire. At the link the fella who said the Cheng Shin beat the Kenda is full of it.
Even though I didn't say the Metzler sucks, and only said Metzler sucks, directly after giving the reason why I said it, several assumed I said all Metzlers suck always.
Now I'm a troll, and according to you, said it just for all the great attention I got.
I've never seen so many thick, touchy, estrogen doused crybabies in all my life, but I like you all of course.
That of course is my fault as well.