Can Hebrews Chapter 4 use of "Today" Be Used to Refute mistranslation of Luke 23:43 in the New World Translation of the Bible? See the "today" doctrine presented in Hebrews:

Hebrews 4:


  6 Since therefore it remains for some to enter it, and those who
  formerly received the good news failed to enter because of
  disobedience, 7 again he appoints a certain day, “Today,” saying
  through David so long afterward, in the words already quoted,
  
  “Today, if you hear his voice, do not harden your hearts.”
  
  8 For if Joshua had given them rest, God would not have spoken of
  another day later on.


...


  11 Let us therefore strive to enter that rest, so that no one may fall by
  the same sort of disobedience.


And notice Jesus' response to the repentant man dying beside him: 

Luke 23:43


  And he said to him, “Truly, I say to you, today you will be with me in
  Paradise.”


The paradise, of course, being "the rest" and today being the "today" of the discussion in Hebrews.

Notice the placement of the comma which causes an entire doctrinal omission: 


  New World Translation: Truly I tell you today, [notice comma placement] You will be
  with me in Paradise.




My question is this:

Can the passage of Hebrews regarding the hope of "today" be linked with Jesus' assurance to the repentant man dying beside him that he would be in paradise "today"?

If we can indeed connect these two thoughts as proof of "today", is this sufficient proof to explain the  New World Translation misrepresentation of the Luke 23:43? 

If Jehovah's Witness doctrine has been engineered to evade even this point, what further investigation needs to be done to fully refute the comma-caused doctrinal omission  regarding "Today"?
I don't think so, since the original manuscripts had no punctuation at all.  Where to place - or even to place at all - commas, periods, colons, semicolons, question marks - is left to the discretion of the interpreter.

I believe the only recourse one has is to appeal to the Church Fathers - particularly the Greek Fathers - and understand how they interpreted the passage, trusting that they are faithful to the teaching of the Apostles.

In John Chrysostom's Homilies Concerning the Power of Demons, he words are translated by the Nicene and Post-Nicene Fathers Series translator:


  So has God done. He gave Paradise to man. He cast him out when he
  appeared unworthy, in order that by his dwelling outside, and through
  his dishonour, he might become better, and more self-restrained, and
  might appear worthy again of restoration. Since after those things he
  did become better, he brings him back again and says Today shalt thou
  be with me in Paradise  Homily I


There are similar commentaries in other writings of Chrysostom, as well as in works of Cyril of Jerusalem, Gregory Nazianzus, and other Fathers.