If Gi is more technical for developing your escapes, then you argument would have to be the same for attacking with submission in No-Gi. If its "easier" to escape submission No-GI because they just "slip out" then Submission offense in No-Gi would require more technique to prevent your opponent from just "slipping out of stuff".
Therefore both sports are just as technical, just diffrent.
Therefore both sports are just as technical, just diffrent.