This is one of the toughest of questions one would ever come across ( Unless you are A Chelsea or Liverpool fan ) . Without doubt they are one of the greatest players and legends for their respective clubs . Lets take a deep analysis into the statistics of each players .
Premier League stats
Lampard Apps - 518 ,
Minutes played - 43975 , Goals - 149, Assists - 114 , Minutes / Goal - 297
Gerrard Apps - 375 ,
Minutes played - 30898 , Goals - 87, Assists - 41 , Minutes / Goal - 355
In premier League Lampard definitely holds an edge over Gerrard having scored more goals and 3 times more assists !
Advantage - Lampard
FA CUP & Carling Cup + Community Shield
Lampard Apps - 57 ,
Minutes played - 4550 , Goals - 32 , Assists - 16 , Minutes / Goal - 142
Gerrard Apps - 26 ,
Minutes played - 1726 , Goals - 11 , Assists - 8 , Minutes / Goal - 156
Lampard has played almost twice matches than Gerrard but has three times more goals and wo times more assists than Gerrard
Advantage - Lampard
Continental Competitions ( UCL & Europa )Lampard Apps - 84 ,
Minutes played - 7101 , Goals - 21 , Assists -24 , Minutes / Goal - 338
Gerrard Apps - 86 ,
Minutes played - 7227 , Goals - 25 , Assists - 15 , Minutes / Goal - 290
Gerrard has an Edge over Lampard in Continental matches but you must look on the fact that Lampard hasn't played in Europa but Gerrard has played 18 Europa league matches
Advantage - Gerrard
Big Match Player
Gerrard is often known as big match player among these two now take a look at their statistics on high prolific opponents
Opponent 1 - Manchester United
Lampard - Apps - 34 Goals - 7 ,Assists - 5
Gerrard - Apps - 27 Goals - 5 , Assists - 3
Advantage - Lampard
Opponent 2 - Arsenal
Lampard - Apps - 34 Goals - 3 ,Assists - 7
Gerrard - Apps - 25 Goals - 5 , Assists - 4
Advantage - Gerrard
Opponent 3 - Liverpool or Chelsea
Lampard - Apps - 42 Goals - 8 ,Assists - 6
Gerrard - Apps - 31 Goals - 1 , Assists - 3
Advantage - Lampard
Opponent 4 - Manchester CityLampard - Apps - 19 Goals - 7 ,Assists - 4
Gerrard - Apps - 21 Goals - 5 , Assists - 2
Advantage - Lampard
Opponent 5 - TottenhamLampard - Apps - 31 Goals - 9 ,Assists - 4
Gerrard - Apps - 17 Goals - 2 , Assists - 2
Advantage - Lampard
Opponent 6 - Barcelona , ACMilan , Bayern Munich , Real Madrid ,IntermilanLampard - Apps - 12 Goals - 6 ,Assists - 2
Gerrard - Apps - 13 Goals - 4 , Assists - 0
Advantage - Lampard
OverallLampard - Goals - 40 ,Assists - 28
Gerrard - Goals - 22 , Assists - 14
Advantage - Lampard
Even In big matches Lampard holds an advantage over So called big match player Gerrard !
You can argue as much as you want but its still a fact and stats prove that
Lampard is better Than Gerrard