Sounds like you have never actually seen a Superchip, or seen one properly installed, so you might not fully understand what's going on here with regards to using tape with the Superchip.
First, tape is *not* required to hold the Superchip in place in normal operations, just as the poster who used both clearly said. And unless a vehicle is of a type that has a "rough" suspension or we know it's going to see rough use, we do not use tape on them. Nor can you ever see it even when tape is used, it is completely out of sight, unless you remove the computer from the vehicle.
The Superchip actually has a little bit tighter grip on that connector than the Diablo chip does, we carry both brands and know this well. That is *not* to say that the Diablo does not have a good grip on that connector, I think it's fine.
The Diablo chip is like no other in that it's the only one I've ever seen that is completely open in design, it's just a chip mounted on a raw PCB (printed circuit board), and it has no enclosure, no EMP or any other kind of protection or shielding of any kind, to protect it ether in handling while programming & installing or in actual use. It's designed to be hidden inside the ECU, it's just the chip mounted on a raw PCB that connects to the J3 male edge connector, basically. It too, has tape already on it, but in the case o unit, that is used as a "handle" to be used to pull it off with, as you should never handle the raw PCB.
The Superchip grips that connector just fine, and is a completely sealed module that is fully enclosed and protects the functioning parts from just about anything other than perhaps throwing it into a lake.
The Superchip is not open, you cannot see the raw PCB or any other components inside like you can with the Diablo, as they are all sealed & protected in the Superchip.
We will use clear disktop Scotch tape anytime we install the Superchip in a vehicle that has a rougher suspension, such as pickup trucks and 4WD vehicles, for example; you never know how people are going to use their vehicles, so it's only prudent to take preventive measures for rough use, and *that* is what this tape thing is *really* all about, it's not some kind of tacky design or design flaw, not by any stretch of the imagination.
In the event of an impact with another vehicle, or rough/offroad use, etc. either of these chips could potentially back off from the connector from vibration, etc., if you don't take a preventive measure, and that is covered fully in the documentation that comes with these chips.
So as a purely precautionary measure, when we install them in vehicles that have rougher suspensions, we will place some clear tape very neatly & precisely over the module to keep it from backing off of the connector in the case of a vehicle impact event. *That* is the only reason why, and the only time we will use tape, and it's for a darned good reason. We carry both brands, and we'll do the same thing when we install the Diablo into a vehicle with a rougher suspension, so that in the case of a vehicle impact event, hitting another vehicle, nailing a large pothole hard, etc., you get the idea, the chip still has a good connection.
I hope that clears this up a bit for you,