No, they both have a separate title track for each expansion (except EoN), plus an extra 'Legendary' title if you get the max in each of the three expansion-specific ones.

In other words, if you max out the respective title for all three continents, you get a fourth title 'for free' that also counts as maxed towards the maxed titles title track.

Actually, I think Skill Hunter and Guardian work the same way. Only Protector does not have the additional 'Legendary' title. Cartographer is the only one of those with a real title 'track', i.e. several levels. All others have only 1 that counts as maxed.
:alcoholic