They aren't copying anyone, different company. TJM has been around for years. Just another OZ bumper source down under making bullbars. Some of their bumpers are actually pretty cool.. cause they're super lightweight and made out of aluminum. I have no clue who was around first, TJM or ARB.. maybe a OZ can chime in.
The T13 looks just like the ARB for a 60 with the siderails and steps!
I'm not saying they're not sweet, just wondering if they're as reputable, and durable.
Not sure which rig you are looking to get bumpered (the Jetta?), but try these guys: http://sleeoffroad.com/Christo has them for the 80 series. His are priced on the site.
If you have a Taco/4Runner then give Steve a try at http://sonoransteel.com/No prices on the site though
Not sure who carries them for the 40/60 in the States, but I'm sure either Christo or Steve could get one across the water if available.