Let’s look at the OOB Paris rush + naval buildup in a vacuum, with Low Luck for consistency.
G1 purchase: 2 BB, 1 inf, 2 art = 0 IPCs
Movement:
14 inf, 6 art->Belgium
9 inf, 4 art, 1 fig->Ruhr
11 inf, 3 art->Alsace
13 inf, 3 art->Hanover
2 sub->Canadian fleet
High Seas Fleet->Royal Navy
Prussia & Silesia hold/do stuff on the Eastern Front
G takes Nigeria, Fr. Eq. Afr., and P. E. Afr.
G1 combat:
Belgium falls, G loses 2 inf.
Canadian fleet destroyed, G loses 0-1 subs
Royal Navy destroyed, G loses 2 subs average
G collects 40 IPCs, end with 40.
F1 purchase: 8 inf = 0 IPCs
Movement:
18 inf, 6 art, 1 fig->Picardy (leaving 1 in Lorraine)
Bordeaux inf->Burgundy
Tunisia inf->activate Albania
Algeria inf->Sp. Morocco
Morocco inf->Portugal
Fr. W. Afr. inf->Gold Coast
2 BB, 1 CA-> Canada SZ
F1 combat: Canada SZ retaken
F collects 26 IPCs, end with 26.
The Western Front: G: 12 inf, 6 art/F: 24 inf, 8 art, 1 fig
G2 purchase: 2 BB, 1 inf, 2 fig = 1 IPC
Movement:
23 inf, 6 art, 1 fig->Lorraine
9 inf, 4 art->Belgium
13 inf, 3 art->Ruhr
1 inf, 2 art->Hanover
High Seas fleet pulls back to Kiel SZ to repair next turn
G2 combat:
Lorraine falls, say G lost nothing
From this point forth, we will assume G has 5 IPC in Africa
G collects 40 IPCs, end with 41.
F2 purchase: 8 inf = 2 IPCs
Movement:
31 inf, 8 art, 1 fig->Burgundy (leaving 1 in Picardy)
Portugal 1 inf, 1 art->Brest
1 Canadian TT, 1 Italian TT-> Portugal SZ
Canadian navy->Brest SZ
F collects 24 IPCs, end with 26.
The Western Front: G: 23 inf, 9 art, 1 fig/F: 32 inf, 8 art, 1 fig
High Seas Fleet: 5 BB, 2 CA
G3 purchase: 2 BB, 1 inf, 2 fig = 2 IPC
Movement:
32 inf, 13 art, 1 fig->Picardy
13 inf, 3 art->Belgium
1 inf, 2 art, 2 fig->Ruhr
1 inf->Hanover
High Seas->Scotland SZ (to avoid mines)
G3 combat:
Picardy falls, say G lost nothing
G collects 42 IPCs, end with 44.
F3 purchase: 8 inf = 2 IPCs
Movement:
31 inf, 9 art, 1 fig->Paris (leaving 1 inf in Burgundy)
Portugal 3 inf, Sp. Morocco inf->Bordeaux
F collects 22 IPCs, end with 24.
The Western Front: G: 32 inf, 13 art, 1 fig/F: 40 inf, 9 art, 1 fig
High Seas Fleet: 5 BB, 2 CA
G4 purchase 10 inf, 2 art, 1 fig=0 IPCs
Movement:
13 inf, 3 art, 2 fig->Picardy
1 inf, 2 art->Belgium
1 inf, 2 fig->Ruhr
1 inf->Hanover
G can take out French fleet by going through 2 mined SZ if they wish
G collects 40, end with 40.
F4 purchase: 8 inf = 0 IPCs
Movement: 4 Bordeaux inf->Paris
F collects 22 IPCs, end with 22
The Western Front: G 45 inf, 16 art, 3 fig/F: 52 inf, 9 art, 1 fig
Round 5 result: G: 15 inf, 16 art, 3 fig/F: 22 inf, 9 art->G: 16 inf, 18 art, 5 fig/F: 31 inf, 9 art (R6 beginning)
Round 6 result: G: 1 inf, 17 art, 1 fig/F: 9 inf, 9 art->G: 2 inf, 17 art, 1 fig/F: 14 inf 9 art (R7 beginning)
Round 7 result: G: 1 inf, 7 art, 1 fig/F: 1 inf, 9 art->G: 2 inf, 7 art, 1 fig/F: 6 inf, 9 art (R8 beginning)
Round 8 result: G: 1 inf, 1 art, 1 fig/F: 1 inf, 8 art->G: 11 inf, 3 art, 2 fig/F: 11 inf, 9 art (R9 beginning)
Round 9 result: G: 2 inf, 3 art, 1 fig/F: 4 inf, 9 art->G: 14 inf, 4 art, 1 fig/F: 16 inf, 9 art (R10 beginning)
So while you may be just starting to overwhelm Paris, it’s taken you 10 rounds to do so. And one of Italy or Russia should be doing very well since Austria can’t hold them both off and the Ottomans’ full attention is on the Brits (since all of Britain’s money is going to India because they can’t get across the channel), and Germany had to stop buying navy R4 to make the seige of Paris mildly successful, so America’s navy (that they should be focusing on with all the German ships built) should easily be big enough to push the High Seas Fleet back into port and allow Brits across now that the Ottomans are no longer a threat.
@Preussener:
Remember, France is producing only ~25 IPC’s per turn, while Germany is sending about 40 IPC’s worth per turn (preferably with newly-bought fighters, for extra firepower).
Finally, there is really no chance of Britain landing in France when Germany is making 2-4 battleships per turn (and has destroyed much of the initial Royal and French navies). That is the purpose of going all/mostly naval builds.
So is Germany sending about 40 IPCs at France or building 2 battleships/turn? 2 battleships leaves Germany with only a piddly 16 IPCs to send at France, which will barely outmatch them even when Paris is contested. But if they don’t build those ships, Britain can send troops across the channel to help France out.