The Comparison Matrix
Topic Population One Population Two Summary Comparison
T1. Topic Sentence 1p1 
  Primary Support A 
    Secondary Support A1 
    Secondary Support A2 
  Primary Support B 
   Secondary Support B1 
   Secondary Support B2 
 

Transition to...>>>>

 Topic Sentence 1p2 
Primary Support A 
    Secondary Support A1 
    Secondary Support A2 
  Primary Support B 
   Secondary Support B1 
   Secondary Support B2 
 

Transition to...>>>>

 Discussion Comparison S1, Transition to T2
T2. Topic Sentence 2p1 
Primary Support A 
    Secondary Support A1 
    Secondary Support A2 
  Primary Support B 
   Secondary Support B1 
   Secondary Support B2 
 

Transition to...>>>>

 Topic Sentence 2p2 
Primary Support A 
    Secondary Support A1 
    Secondary Support A2 
  Primary Support B 
   Secondary Support B1 
   Secondary Support B2 
 

Transition to...>>>>

 Discussion Comparison S2, Transition to T3
T3 Topic Sentence 3p1 
Primary Support A 
    Secondary Support A1 
    Secondary Support A2 
  Primary Support B 
   Secondary Support B1 
   Secondary Support B2 
 

Transition to...>>>>

 Topic Sentence 3p2 
Primary Support A 
    Secondary Support A1 
    Secondary Support A2 
  Primary Support B 
   Secondary Support B1 
   Secondary Support B2 
 

Transition to...>>>>

 Discussion Comparison S3, Transition to T4
T4 Topic Sentence 4p1 
Primary Support A 
    Secondary Support A1 
    Secondary Support A2 
  Primary Support B 
   Secondary Support B1 
   Secondary Support B2 
 

Transition to...>>>>

 Topic Sentence 4p2 
Primary Support A 
    Secondary Support A1 
    Secondary Support A2 
  Primary Support B 
   Secondary Support B1 
   Secondary Support B2 
 

Transition to...>>>>.

 Discussion Comparison S4, Transition to 

Conclusion 
T1-T4 = core of the introduction S1-S4 = core of the conclusion