Tsukuba is DS3 friendly, don´t demand smooth lines as Suzuka simply because it doesn´t have only one way to be achieved. Instead, only a smaller part of the drifters in Tsukuba try to keep on the perfect (standard, correct) lines. And most of the majority who don´t do it (many of them CS and SH tire users) don´t even know that they are going wrong.
So yes, Tsukuba is a short track easy to remember, but if you don´t go using the correct lines, its just a pool for noobs. It´s not an "all or nothing" track.