Everyone seems to be focusing purely on the Bug typing for how Syclar should be, while ignoring Syclant's Ice typing. Since DHR decided to show the BST difference between the Stages of 2 Stage Bug Pokemon, I decided to do the same for 2 stage Ice Pokemon.
Starting off this with the only Gen 5 Pokemon on this list is Cubchoo/Beartic. Cubchoo has a BST of 305, while Beartic sits at 485, which is a difference of 180. Abamasnow has 494 and Snover has 334, for a difference of 160. Jynx is at 455 and Smoochum is at 305 for a difference of 150. Snorunt's BST is 300, while both Frosslass and Glalie have 480, for a difference of 180. Sneasel has 430, which is so high for a Stage one because it was made to stand alone, while Weavile is 90 points higher at a BST of 510. Shelder and Seel gain both an Ice type and 220/150 BST respectively wheen they evolve. The last Pokemon that I feel the need to mention is Swinub. While it is technically a 3 Stage Pokemon, it was introduced as a dual-stager, so its stats should reflect that. Swinub has a BST of 250 and Piloswine's BST is 450, which is a difference of 200.If you average all of those differences it comes out to 166.25, so let's say 165.
If dual-stage Bug-types usually have a BST difference of 125 between forms like DHR says they do then Syclar and Syclant should have a BST difference of 145. Syclant's BST is 575, and the total of X-Act's stat spread is 277, which is 298 BST lower, which is much too low. Sticking strictly to averages would put Syclant's BST at 130, right there with Sneasel. However, given that the difference between Sneasel's BST and Weavile's BST is only 90, maybe a BST around 375 would fit Syclar better.
If we follow Jas's Kricketot model for Syclar's bug portion, however, then the difference between stage one and stage two is about 175, which would put Syclar's BST at 400. Using the result of both models gives us a nice range for Syclar's BST: 375 - 400. Of coure, all that I've really proven is that the (35/58/35/57/32/60) spread is drastically underpowered.