TW Matchmaking is still an issue.

To clarify in case of confusion:

In a "full" TW where both guilds have 50 players, each zone in the map has room for 25 squads. If your guild has 50 players and the other guild only has 40 players sign up, then you will see only room for 20 squads on each defensive zone. So if you know your guild had all 50 members sign up, you can tell how many players the opposing guild has registered for the TW by the number of squads per zone. So if you can tell me how many squads can be assigned in this matchup, we can determine the number of opposing players, and re-assess the comparison accordingly.  

EA has not shared the full details of the algorithm with the general population. However, after looking at dozens of matchups, it seems to be 98% based strictly off pure "Active GP" of the players registered. They do not appear to take specific characters, mods, gear levels, zetas, or anything into account.

I feel it is somewhat unreasonable to expect the game developers to write a code that will always match your guild against a similar guild that has the same number of zetas, g12s, gp, players etc. Shouldn't those guilds who have developed more characters and earned more zetas get an advantage? Shouldn't players who make poor decisions, don't farm as many zetas, and don't earn as much gear have a harder time because of their choices?

If there are 10 guilds with the same GP - one of those guilds will always have the most zetas in any matchup with the other 9, and one of those guilds will always have the fewest. The guild with the fewest will always complain about poor matchups - but isn't it really just the result of their being the weakest guild out there? If the developers wanted to give them an "even" matchup based on zetas, then they would have to match them against a guild with a lower GP, and then that guild would complain that they were matched against a higher guild.

The tl;dr is - if your guild is one of the weakest in your "GP range", then you will almost always get an unfavorable matchup. If your guild is one of the strongest in your "GP range", you will almost always get a favorable one.

Control what is within your power to control. Develop your roster and your guild's to be more efficient than similar GP players, and you will see better matchups.