This sounds like the debates we used to have when I graduated from Parris Island (i.e., we were better than "Hollywood Marines," etc.) The discussion was fun, but pointless - regardless of which depot we graduated from, the end result is that we were all basically-trained Marines.
At TBS, there are numerous commissioning sources, and a myriad of experience levels: Academy grads (from all three academies), Academy grads with prior service, NROTC who did Bulldog, prior service NROTC who did MCRD AND Bulldog, PLC who went 10 weeks, PLC who went 6+6, PLC who went only 6, MECEP who went Bulldog, OCC who went 10, prior-service PLC who went through MCRD and 6+6 OCS, ECP/MCP who went through MCRD and OCS, etc, etc, etc (there surely are many combinations that I missed...) Then, factor in that some lieutenants are green 21-year olds, and some are 13-year former gunnies with numerous combat experience. Oh, and did I mention the international officers?
The bottom line is that TBS is a great place to meet others with different backgrounds, different commissioning sources, etc. Thanks to the "clean slate" everybody starts with at TBS, regardless of how they earned their commissiong, the end result is the same: A "basically-trained" lieutenant.