Sanskar is best till now in the sense that he is not forcing his love to accept her , but silently protecting , supporting and helping her , there's no show off from his side, he is ready to do everything to make Swara happy but in return he never demanded anything , and I think, that shoild be called True love is'nt it ?
Threatening over phone that if swara does not come within 15 minutes someone is going to sacrifice his love, is one type of madness, partially same to what Ragini is doing to get Lakshya , so if Lakshya's act of "getting Swara anyway" is justified only because he loves Swara or romanced with her earlier in the show, then Ragini's all acts are also justified, because she also loves Lakshya and only wanted to be with her..
The Swara is married to Sanskar , this is the only fact Lakshya should remember , this is not a crime to feel bad about that , also I wouldn't say he is doing wrong if in his mind he cries or takes time to accept Swasan Marriage.. But forcing Swara to come out of this relation to remarry him is obviously a very much wrong doing.. he should respect the marriage of Swasan too , but he is only concerned about what he wants...
And on the other side , Sanskar cried a thousand times alone in his room when Swara left Maheswari Mansion but in front of swara he never created a scene by stopping her from leaving or forcing her to accept his love, he is bearing everything silently only because he wants Swara's happiness..
Sanskar always respected Swalak realation as well, he asked Swara a several times , whether she wants to get back with Lakshya , and always tried to make his brother happy whenever he wanted to meet Swara or talk to her ..
So that is the basic difference between the two brothers, Lakshya is forcing Swara to accept him same way Ragini is doing drama one by one to get Lakshya's love, if Ragini is guilty of separating SwaLak then Lakshya is also guilty of insulting swara a several times by not trusting her , now when he got to know the full story , all of a sudden he wants everything he has damaged in his own hands to get fixed like a magic, in no way a true love can behave in such an immature way , true love is always silent, it never overreacts or demands ,if you match the concept with Sanskar and you will get the obvious answer for the question "who is actually loving swara and who is crazy about the concept of getting Swara"