Cristiano Ronaldo not efficient enough - UEFA averaged goals per game

Top scorer in UEFA club competitions with 78 - Ronaldo

When it comes to Europe's club competition, the current top goal scorers have had the opportunity to score more goals than their predecessors due to their participation in many continental matches.
But when it comes to average goals per game, the 'oldies' top the chart with pure and more goals in their matches played.

Real Madrid and Portuguese forward, Cristiano Ronaldo surpassed former club mate Raul Gonzalez in the all time scorers in UEFA club competitions with 78 goals. 

Ronaldo has 74 goals in 116 UEFA club matches.

However, the world's best player doesn't fall in the all time list of goals per game.
He lags behind some great and unexpected names.

Top goals per game averages in all UEFA club competitions
0.90: Radamel Falcao (FC Porto, Club Atlético de Madrid) – 38 goals in 42 games.
0.87: Gerd Müller (FC Bayern München) – 62 goals in 71 games.
0.86: Stéphane Guivarc'h (AJ Auxerre, Stade Rennais FC, Newcastle United FC) – 24 goals in 28 games.
0.82: Ivan Mráz (ŠK Slovan Bratislava, AC Sparta Praha, FK Dukla Praha) – 18 goals in 22 games.
0.86: Ferenc Puskás (Budapest Honvéd FC, Real Madrid CF) – 37 goals in 43 games.
0.83: Alfredo Di Stéfano (Real Madrid CF) – 50 goals in 60 games.
0.81: Jupp Heynckes (VfL Borussia Mönchengladbach) – 45 goals in 55 games.
0.80: Kees Kist (AZ Alkmaar, Paris Saint Germain) – 20 goals in 25 games.
0.80: Denis Law (Manchester United FC) – 20 goals in 25 games.
0.80: Kevin Hector (Derby County FC) – 16 goals in 20 games.

List of Top goals per game averages in UEFA champions league/ European Champions club's cup
0.97: Gerd Müller (FC Bayern München) – 34 goals in 35 games.
0.86: José Altafini (AC Milan, Juventus) – 24 goals in 28 games.
0.85: Ferenc Puskás (Budapest Honvéd FC, Real Madrid CF) – 35 goals in 41 games.
0.84: Alfredo Di Stéfano (Real Madrid CF) – 49 goals in 58 games.
0.82: José Águas (SL Benfica) – 18 goals in 22 games.
0.80: Lionel Messi (FC Barcelona) – 75 goals in 94 games.
0.76: Jean-Pierre Papin (Olympique de Marseille, AC Milan) – 28 goals in 37 games.
0.75: Eusébio (SL Benfica) – 47 goals in 63 games
0.74: Ruud van Nistelrooy (PSV Eindhoven, Manchester United FC, Real Madrid CF) – 60 goals in 81 games.
0.68: Marco van Basten (AFC Ajax, AC Milan) – 19 goals in 28 games.