When he's a medium or long distance away, he'll deflect your shots pretty often.
And since blaster deflection only occurs if your attack roll is 10 or less than the enemy's defence plus the blaster deflection value, the chances of your shot getting deflected are much less when your target is right in your face! Don't believe me? Try it against Malak. When an opponent is right in front of you, you get a +10 close proximity bonus to your attack roll. The solution? Put on a shield and let them come! Am I crazy? No, let me explain. The best solution is to incapacitate them with force powers, but that may be impossible or unproductive, when facing foes who can't be stunned or paralysed, have already thrown up a Force Immunity, or whose saves are too darn good (Malak just happens to fit all 3 categories). When dealing with lightsaber-wielding foes, deflection is always a problem. Here are more tips on using blaster jedi. With a baragwin heavy repeater(fully upgraded), rapid shot and master speed, my jedi could mow down a charging rancor in a single round! This radically changes things, because master speed makes a blaster-wielding jedi very lethal indeed.
I mention this because the fight against Juhani is only your PC and her- there is only one foe, so there can be no question of confusing other characters' hits for your own. I have tried it out and there is no doubt of this- when fighting Juhani, my Soldier 8/Consular 1 could often get in 3 hits per round (regardless of the number of "shots" fired), while using Zaalbar's Bowcaster(a blaster rifle), rapid shot and Knight Speed.
Similarly, it may not really look like 5 shots, but you CAN actually hit 5 times in the above example (if your attack rolls succeed). For example, when your character is wielding 2 blaster pistols, using Rapid Shot and has Master Speed on, a potential 5 hits per round can be achieved - the number of shots may look the same, but the shots are mostly cosmetic anyway - normally when a character fires off 1 shot, it looks like 3 shots but in truth only one can hit and the rest will hit the ground. Regarding Force Speed, as of 1.03 at least (I have not played earlier versions), Knight and master speed do indeed grant extra shooting attacks.