Hi there. I don't know what can I actually add to Sunblast page, The mod says it affect trap duration only, so, I don't think any additional clarification needed.
Here is entrapped Vortex w/ sunblast; w/o sunblast. As you can see, skill duration is not affected, it stays 3 sec in both cases.
Please don't take it personally, I'll remove any false dogmatic information on the wiki. --0xf (talk) 13:13, 17 August 2016 (UTC)