Con that Monster ?

Levels 1 - 12
"Looks like a reasonably safe opponent." Creature is 4 levels or more below you.
"Looks like you would have the upper hand." Creature is 1 - 3 levels below you: 
"Looks like an even fight." Creature is the same level as you. 
"Looks like quite a gamble." Creature is 1 - 2 levels above you. 
"What would you like your tombstone say?" Creature is 3 or more levels above you. 

Levels 13 - 14
"Looks like a reasonably safe opponent" Creature is 6 levels or more below you.
"Looks like you would have the upper hand." Creature is 4 - 5 levels below you.
"Looks kind of risky, but you might win."
Creature is 1 - 3 levels below you.
"Looks kind of risky.. you might win."
Creature is the same level as you.
"Looks like quite a gamble."
Creature is 1 - 2 levels above you.
"What would you like your tombstone say?"
Creature is 3 or more levels above you. 

Levels 15 - 24
"Looks like a reasonably safe opponent."
Creature is 6 levels or more below you.
"You would probably win this fight.. it's not certain though." Creature is 5 levels below you. 
"Looks quite risky, but might be worth a try."
Creature is 4 levels below you.
"Looks quit risky."  Creature is 3 levels below you. 
"Looks kind of dangerous." Creature is 2 - 1 levels below you. 
"He appears - be quite formidable."
Creature is the same level as you.
"Looks like quite a gamble."   Creature is 1 - 2 levels above you. 
"What would you like your tombstone say?"
Creature is 3 or more levels above you. 

Levels 25 - 34
"You could probably win this fight."  Creature is 11 levels or more below you. 
"This creature could pose problems, you would probably defeat it." Creature is 8 - 10 levels below you. 
"Appears - be quite formidable." Creature is 1 - 7 levels below you. 
"Looks like quite a gamble."  Creature is the same level as you. 
"Looks like it would wipe the floor with you!" Creature is 1 - 2 levels above you. 
"What would you like your tombstone say?" Creature is 3 or more levels above you. 

Levels 35 - 40
"You could probably win this fight." Creature is 11 levels or more below you. 
"This creature could pose problems, you would probably defeat it." Creature is 10 levels below you. 
"Appears - be quite formidable." Creature is 1 - 9 levels below you.
"Looks like quite a gamble."  Creature is the same level as you. 
"Looks like it would wipe the floor with you!" Creature is 1 - 2 levels above you. 
"What would you like your tombstone say?" Creature is 3 or more levels above you. 

Levels 41 - 44
"You could probably win this fight."  Creature is 12 levels or more below you. 
"Appears - be quite formidable."  Creature is 1 - 11 levels below you. 
"Looks like quite a gamble."  Creature is the same level as you. 
"Looks like it would wipe the floor with you!" Creature is 1 - 2 levels above you. 
"What would you like your tombstone say?" Creature is 3 or more levels above you. 

Levels 45 - 49
"You could probably win this fight." Creature is 13 levels or more below you. 
"Appears - be quite formidable." Creature is 1 - 12 levels below you.
"Looks like quite a gamble." Creature is the same level as you. 
"Looks like it would wipe the floor with you!" Creature is 1 - 2 levels above you. 
"What would you like your tombstone say?"  Creature is 3 or more levels above you. 

Levels 50
"You could probably win this fight." Creature is 14 levels or more below you. 
"Appears - be quite formidable" Creature is 1 - 13 levels below you.
"Looks like quite a gamble."  Creature is the same level as you. 
"Looks like it would wipe the floor with you!"  Creature is 1 - 2 levels above you. 
"What would you like your tombstone say?" Creature is 3 or more levels above you. 

Levels 51-60
I haven't gotten the info for these levels.