Love cannot be based on time. It depends on the trust nd understanding which u develop in tht time. Nd also on the person's maturity level. This is what makers wanna show thru swasan.
SwaLak were together for more time but tht love was nt mature enough to withstand trials of life. If this love would hv been strong, no Ragini or Sanskaar could come in between. Both were equally responsible for the miscommunication, lack of trust. Laksh never tried to understand Swara. Swara was just a trophy for him.
Nw Sanskaar had analysed Swara's character for his revenge part. He knows Swara as much Swara knows herself, maybe a tad bit more. So he trusts her with all his heart, which is what important.
Choosing between Lucky or Sanku depends on Swara. even if she chooses Laksh, there relationship will lack the trust nd understanding factor or if they even build it, nw it will be always lesser than what SwaSan has, CV'S have seen to it.
But as a SwaSan shipper, I'll always want SwaSan tp be together. They are like sugar nd water. Their combination will always result in something sweet.
Nw for the time period. Tht can be acceptable since they don't show each day to us.