The phrase 'even though different' is correct and usable in written English.
You can use it to express a contrast between two things that are not the same, for example: "I went to the same restaurant twice, even though the experience was different each time."
Even though different scanners differ slightly, it is generally accepted that a RATIO value above 1.5 is clearly abnormal.
This is the same way that "law" is used unambiguously even though different societies have laws with widely differing content.
Second, they argued that, even though different cultures may interpret certain universal phenomena differently, some cultures are more correct in their constructions.
To conclude, we found limited differences between the Belgian and Australian G1P[8] rotaviruses, even though different vaccines were used in both locations.
Even though different parties rule, we agree on concrete objectives and we cooperate in a very agile way, exchanging experiences and solutions.
Typewriting analysts were convinced that the five letters had been typed by the same person, even though different typewriters had been used.
Hawkins' project builds on an assumption by Vernon Mountcastle, a neurobiologist who in the 70s pointed out that in the neocortex all the neurons are organised in the same way, even though different areas of the cortex perform different functions.
Brain imaging, for all the sophistication of its technology, yields a fairly crude picture of what's going on inside the skull, and the same spot in the brain might light up for two tasks even though different neurons are involved.
Even though different types of reservoirs exist, all can form hydrocarbon accumulations in the early accumulation period.
(Even though different waves of hype emerged in the 1950s and the 1980s, this time is different, right?).
In relation to toxicity, samples ozonated at pH 3 did not inhibit the luminescence of the bacteria, even though different intermediates were formed and identified by mass spectra.
