Despite being down to 13-men in the second half, the Dragons looked set to get their first away win since they beat Treviso in March 2015.
However, they lost out after Paddy Jackson's 78th-minute penalty snatched the win for Ulster but Landman believes the positives, including the try, will be a boost for their next GUINNESS PRO12 match against Connacht on Thursday.
"I think that (try) was the best one I've ever seen in a team I've played in, that was really class," said the South African.
"From a turnover ball in our own half, we went through the phases and Ashton [Hewitt], I asked him after the game if he put Vaseline on because they were just slipping off him, then scoring in the corner.
"It was a really impressive try. I think in the last four weeks we've scored good tries from turnovers and that's what we aim to do.
"We scored a good try, one brilliant try, and we had them in the driving line-out but we weren't in their 22 a lot to build pressure, so we need to sort that out.
"If you play the game in the right areas and spend time down there, it'll actually get pressure into points."
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Guinness PRO12 Dragons News
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