I don't know why people keep saying there was no juggling in Tekken 2, and Tekken 3. Newsflash people, yes you can juggle in the early installments. Of course the number of hits you can do is limited. Like with Nina and Anna I can do 5 to 6 hits in Tekken 3, and up to 4 to 5 hits in Tekken 2. and even with tekken 1, you could probably do up to 4 hits. This means juggling has been part of Tekken tradition, and it will always be. If you don't like it, then play something else. If I only I knew how to upload my gameplays on youtube, I'd prove it.
***** Yes it is possible. Let me give you some Nina combos since this video is Nina video. In Tekken 1, accuracy can be hard but possible to do. d/f+2, d/f+3,2,4 =4 hits or d/f+2, d/f+3,4=3 hits. Tekken 2, d/f+4,3 followed by u/f+4, d+4,2 then f,f+1+2=6 hits. or d+3,2, then d/f+3,2,4=5 hits. Tekken 3: d/f+4,3, u/f+3, d+3,2 then f,f+3=6 hits. There are videos you can search showing combos performed by other characters on Tekken 1,2, and 3. There's always been juggling, they just added bound in Tekken 6 for extended strings. If I knew how to upload gameplays, I would show you.